Private Onsen in Hakuba | A Relaxing Hot Spring Experience

What Is a Private Onsen

The Appeal of a Private Onsen

A private onsen (kashikiri onsen) is a service that lets you rent out one of the baths within an onsen facility by the hour. In English it is called a "private onsen." Unlike a public communal bath, only a limited group—family, friends, or a couple—can use it, so you can relax and enjoy the hot spring without worrying about other guests.

For international travelers who are not used to Japanese bathing culture, a private onsen has a special appeal. You can take your time experiencing Japanese onsen culture in a private space, free from the gaze of others.

Private Onsen vs. the Large Communal Bath

Combined with their beautiful natural surroundings, Hakuba's private onsen are especially popular with international visitors. In fact, for travelers from abroad, a private onsen where you can bathe in your own space often becomes a highlight of a trip to Japan.

Features and Types of Hakuba's Hot Springs

The Richness of Hot Springs in the Hakuba Area

Although Hakuba is a small village of about 189 square kilometers, it is a treasure trove of hot springs, with six sources welling up: Hakuba Happo Onsen, Hakuba Himekawa Onsen, Hakuba Shio-no-Michi Onsen, Hakuba Ryujin Onsen, Hakuba Mizubasho Onsen, and Hakuba Katakuri Onsen. What is even more remarkable is that these springs cover five of the ten types of hot spring water quality found in Japan. This is rare even within Japan, and being able to experience a variety of hot spring benefits in a single area is one of Hakuba's great attractions.

The Main Types of Hakuba Hot Springs and Their Features

Hakuba Happo Onsen

One of Hakuba's most famous hot springs, Hakuba Happo Onsen is known for its unusual water quality. Its strongly alkaline simple spring, with a pH above 11.5, ranks among the most highly alkaline waters in all of Japan. It also draws attention as a "natural hydrogen onsen," making it extremely rare even on a global scale.

Features:

• Colorless and clear, with a gentle effect on the body
• Strongly alkaline, with a high beautifying effect on the skin
• Softens the skin's keratin and emulsifies excess sebum and dead skin
• Has an antibacterial effect that refreshes the skin
• You can feel your skin become smooth and silky after bathing

Benefits:

• Relief from neuralgia and muscle pain
• Relief from sensitivity to cold
• Recovery from fatigue
• Beautiful skin

Hakuba Himekawa Onsen

Hakuba Himekawa Onsen sits along the Himekawa River, which flows through the center of Hakuba. The source temperature is about 49°C, and the water is notable for its rich metasilicic acid content.

Features:

• Brownish water color
• A soft feel on the skin that is gentle to the touch
• Views of the Northern Japan Alps from the open-air bath
• Many facilities use free-flowing source water (kakenagashi)

Benefits:

• Relief from joint pain
• Relief from neuralgia
• A moisturizing effect on the skin

Hakuba Shio-no-Michi Onsen

Hakuba Shio-no-Michi Onsen is a rare "carbonated spring," a type that makes up only 0.5% of hot springs in Japan. It is rich in minerals such as iron and turns brownish when exposed to air.

Features:

• Carbon-dioxide–bearing sodium chloride–bicarbonate spring
• Soaking turns the body red and improves circulation
• Turns brownish when exposed to air
• A rare hot spring sealed within the Fossa Magna for 25 million years

Benefits:

• Improved circulation
• Relief from sensitivity to cold
• Relief from high blood pressure
• Relief from neuralgia

Hakuba Mizubasho Onsen

Hakuba Mizubasho Onsen is characterized by sodium bicarbonate water quality. The baking-soda component in the water has a strong beautifying effect on the skin and is especially popular with women.

Features:

• The source temperature is 49°C, and the bath stays at 40°C even on nights of –10°C
• Colorless, clear, and almost odorless
• The baking-soda component leaves the skin smooth

Benefits:

• Beautiful skin
• Recovery from fatigue
• Helps regulate the stomach and intestines

Recommended Private Onsen Facilities

Hakuba has many types of private onsen facilities. Here we highlight the ones that are especially well regarded by international travelers.

Hakuba Happo Onsen “Obinata no Yu”

This is a private open-air bath of Hakuba Happo Onsen in the Happo area. It is a popular spot where you can enjoy the strongly alkaline natural hydrogen onsen in a completely private space.

Features：

The strongly alkaline water of Hakuba Happo Onsen is known for leaving the skin smooth after bathing, making it perfect for soothing a body tired from skiing and outdoor activities. The facility also offers a unique "oke-zake" (tub sake) service: a refrigerator stocked with local sake is set up in the changing room of the private onsen. Enjoying your favorite drink while you bathe is another part of the appeal.

Hotel Sierra Resort Hakuba

Hotel Sierra Resort Hakuba stands on a magnificent highland overlooking the Northern Japan Alps, where you can enjoy free-flowing open-air baths fed straight from the source and French cuisine made with local ingredients. Here you can experience three different styles of private onsen, all sourced from Hakuba Mizubasho Onsen, for a variety of bathing experiences.

Features:

• Three types: the "Japanese-Room Bath," "Thermae Romae," and "Goemon-buro" (iron-cauldron bath)
• Reservations available to overnight guests only
• 100% free-flowing source water (kakenagashi)
• Fee: free once per night for overnight guests

The "Goemon-buro" in particular is very popular with international guests as a way to experience a traditional Japanese bathing style. Soaking inside a large cauldron filled with natural hot spring water is a unique bathing experience and a precious chance to feel a part of Japanese culture.

Azekura Sanso

Azekura Sanso's "Otaru no Yu" is a private open-air bath sourced from Hakuba Himekawa Onsen. Surrounded by nature, it offers a private hot spring experience.

Features:

• A private open-air bath set in a natural environment rich with the scent of wood
• A calm atmosphere where you can relax while gazing at the trees
• English-speaking staff on site
• Free-flowing source water (kakenagashi)
• Fee: ¥4,000 for 50 minutes (1–5 people) *free for overnight guests

True to its name "Otaru no Yu" (Big Barrel Bath), the tub is built like a large wooden barrel, offering a quintessentially Japanese bathing experience where you can feel the warmth of the wood as you soak. With English-fluent staff always on hand, the setting is one where international travelers can relax with peace of mind.

Hakuba Mominoki Hotel

Located in the center of Hakuba, Hakuba Mominoki Hotel is a mountain resort whose pride is an open-air communal bath filled with skin-beautifying water and a sauna. It enjoys a prime location just a 3-minute walk from the Happo-one gondola for skiing and trekking. With a fireplace lounge and three restaurants, it offers a comfortable stay in any season.

Hakuba Mominoki Hotel is fully equipped with a private onsen bath drawn from Hakuba Happo Onsen. It is a completely private room, so even guests with small children can use it with peace of mind.

Features:

• A completely private private onsen
• A size and amenities ideal for families
• Rented by time slot (reservation required)
• Amenities such as lotion provided
• Fee: per group (1–4 people) ¥4,500 for 1 hour (overnight-guest rate)

It is especially popular with international families who are not used to onsen culture. Because it is completely private, you can relax and enjoy the hot spring while keeping an eye on your children. It is also recommended for those who feel hesitant about using a large communal bath.

Yamanosato Hotel Hakuba Hifumi

A modern Japanese-style inn in the heart of Hakuba Happo Onsen. The free lounge serves wine and oyaki (stuffed dumplings), and in winter the shuttle to the slopes makes it an ideal ski base. Highly rated in reviews, it offers both private baths and rooms with open-air baths. Overnight guests can use the private bath for free. There are three open-air-bath suites and three rooms with open-air baths, and the inn is popular for its spotless facilities and high-quality service.

Features:

• Clean private baths and in-room open-air baths
• Magnificent views of the Northern Japan Alps
• Highly praised in reviews for attentive staff
• Fee: private family bath "Yui no Yu," 60 minutes, free (overnight guests only)

Onsen Etiquette for International Visitors

Japanese onsen culture has its own etiquette and rules, and even at a private onsen it is important to follow the basics. Here are the points international visitors should know, especially when using one for the first time.

The Basics of Taking an Onsen Bath

1. Undress and prepare: Take off all your clothes in the changing room. Store valuables in a valuables locker.
2. Wash your body before bathing: Even at a private onsen, washing your body before entering the bath is the basic rule. Most private baths have a shower or washing area.
3. Bathe: Enter the bath slowly. It may feel hot at first, but you will gradually get used to it.
4. Using a towel: When you enter the bath, do not put your towel into the water. Place a small towel on your head or set it outside the bath.
5. Rest: When your body gets warm, step out of the bath once to rest. Don't forget to stay hydrated.
6. Bathe again: Once your body has cooled down, get back into the bath. Repeating this is the Japanese way of enjoying an onsen.

Etiquette During Your Visit

Keep to your time: For a private bath rented by the hour, stick strictly to your reserved time for the sake of the next guests. As a rule of etiquette, get out of the bath about 10 minutes before the end and start tidying up.

Keep the bath clean: After use, do some light cleaning (such as removing stray hairs) so the next guests can use it comfortably.

Keep your hair out of the water: Tie up long hair so it does not touch the water.

Stay quiet: It is important to keep a quiet, calm atmosphere. Especially at night, your voice may carry to nearby guest rooms, so avoid talking loudly.

Eating and drinking: Avoid eating or drinking while in the bath.

Photography: A private onsen protects your privacy, but refrain from posting photos to social media or elsewhere without the facility's permission.

Health Precautions

Bathing time: A hot spring can put a strain on the body. Beginners in particular should start with about 10–15 minutes and gradually extend the time while watching how they feel.

Alcohol and bathing: Bathing right after drinking alcohol can cause blood-pressure swings and may be dangerous. Avoid bathing immediately after drinking.

Hydration: Because you sweat in an onsen, drink water before and after bathing to prevent dehydration.

When you feel unwell: If you are not feeling well, or if you have a chronic condition such as heart disease or high blood pressure, refrain from bathing or keep it short.

About Tattoos

Many public baths in Japan prohibit bathing for people with tattoos, but one big advantage of a private onsen is that this is far less of a concern. That said, some facilities do have rules about tattoos, so we recommend checking in advance.

About Swimsuits

At a traditional Japanese onsen, wearing a swimsuit is generally not allowed. This is to prevent detergent residue and other impurities from the swimsuit from dissolving into the hot spring. Even at a private onsen, bathing nude is the norm in most cases, though some facilities offer private baths where swimsuits are allowed. It is reassuring to check before you go.

How to Reserve a Private Onsen

Online Booking Is Easy

In recent years, many onsen facilities have adopted online booking systems. More and more have English-language websites, making it easy for international travelers to book.

When booking, you will need the following information:

• Desired date and time
• Number of people
• Name
• Contact information
• Accommodation (if a shuttle service is available)

Booking Through Your Accommodation

If you are staying at a hotel or ryokan, the easiest way is to book the private onsen through the front desk or concierge. Especially for facilities that do not offer English support or that only take phone reservations, asking the staff at your hotel will make things go smoothly.

Same-Day Reservations

Popular facilities are often fully booked in advance, but during the off-season or on weekdays, same-day reservations may be possible. Still, if you want to be sure of a slot, we recommend booking a few days ahead—and several weeks ahead during peak season.

What to Check When You Book

• The price and time slot
• Whether towels and amenities are provided
• Rules about tattoos
• Whether bath towels and face towels can be rented
• Whether amenities such as shampoo and body soap are provided
• The maximum number of people allowed

Tips for Making the Most of Hakuba's Hot Springs

Experience a Variety of Water Qualities

The appeal of the Hakuba area is that you can enjoy hot springs of many different water qualities. Try experiencing different types of onsen during your stay. For example, the following combination is recommended:

• Day 1: Experience the beautifying effect at Hakuba Happo Onsen (strongly alkaline)
• Day 2: Improve your circulation at Hakuba Shio-no-Michi Onsen (carbonated spring)
• Day 3: Recover from fatigue at Hakuba Himekawa Onsen

Enjoy the Scenery Along With Your Bath

Many of Hakuba's private onsen are positioned to overlook the peaks of the Northern Japan Alps and the rich surrounding nature. Bathing while enjoying scenery that changes with the season and time of day is part of the pleasure.

• Morning bath: Start your day with the fresh morning air
• Dusk: The sunset and the silhouettes of the mountains are beautiful
• Night bath: Bathing under a sky full of stars is exceptional

Combine Onsen With Activities

Hakuba is an area where you can enjoy a variety of outdoor activities throughout the four seasons. Warming up in an onsen before or after an activity makes for an even more rewarding experience.

• Winter: Warm a chilled body in the onsen after skiing or snowboarding
• Spring: Soothe your tiredness after picking wild vegetables or hiking amid fresh greenery
• Summer: Rinse off your sweat and rest your body after rafting or mountain climbing
• Autumn: After viewing the autumn leaves, soak in the onsen while gazing at the colorful trees

Recommended Private Onsen Experiences by Season

Winter (December–March)

Hakuba is known as one of the world's premier ski resorts, and in winter many international skiers and snowboarders visit. In this season, a "yukimi onsen" (snow-viewing bath) while gazing at the snowy scenery is especially recommended.

Points:

• Soothe muscles tired from skiing and snowboarding in the onsen
• When traveling to the onsen facility, those not used to snowy roads should use a shuttle service
• To warm a chilled body, bathe slowly so you get used to the water temperature

Spring (April–May)

This is the season when fresh greenery sprouts as the snow melts. Enjoying an onsen when the contrast between the green mountains and the remaining snow is beautiful is exceptional.

Points:

• A combination of spring wild-vegetable cuisine and onsen is recommended
• If you have hay fever, don't forget to wash your face and gargle after bathing
• Because temperatures swing widely in this season, take care to regulate your body temperature after bathing

Summer (June–September)

Hakuba is at a high elevation and stays relatively cool even in summer, making it popular as a place to escape the heat. In summer you can enjoy an onsen while feeling a cool breeze.

Points:

• In summer, choosing an onsen with a slightly lower water temperature is more comfortable
• Stay well hydrated after bathing
• Bathing while gazing at the summer night sky is also a wonderful experience

Autumn (October–November)

Hakuba's autumn leaves are beautiful, and the combination with an onsen is exceptional. There are relatively few tourists at this time, so you can enjoy the onsen at a leisurely pace.

Points:

• It's fun to look for photo spots that capture both the autumn leaves and the onsen
• A combination of autumn flavors and onsen is recommended
• Because the temperature difference between morning and night is large, don't forget to guard against the cold after bathing

Access Information and Recommended Nearby Spots

Getting to Hakuba

From Tokyo:

• Shinkansen + train: From Tokyo Station to Nagano Station on the Hokuriku Shinkansen (about 1 hour 40 minutes), then from Nagano Station to Hakuba Station on the Oito Line (about 1 hour)
• Bus: Direct bus from Shinjuku (about 5 hours)
• Car: About 4 hours via the Kan-Etsu Expressway and the Joshin-etsu Expressway

From Osaka:

• Shinkansen + train: From Shin-Osaka Station to Kanazawa Station on the Hokuriku Shinkansen (about 2 hours 30 minutes)
• Car: About 6 hours via the Meishin Expressway and the Hokuriku Expressway

From Nagano Airport:

• Bus: About 1 hour 30 minutes by bus from Matsumoto Airport to Hakuba

Getting Around Within Hakuba

• Rental car: Recommended for those who want to move around freely (in winter, only those with experience driving on snowy roads)
• Village shuttle bus: Runs mainly in winter
• Taxi: An increasing number of taxis offer English support
• Accommodation shuttle service: Many onsen facilities provide a shuttle service

Recommended Spots Near the Private Onsen

Here are nearby facilities and sightseeing spots worth stopping by before or after your onsen.

Gourmet spots:

• Hakuba Hütte: Alpine cuisine made with local ingredients
• Western-Style Café EMMA: A café popular with international visitors too
• Hakuba Soba Club Marukan: Enjoy local soba

Sightseeing spots:

• Hakuba Iwatake Mountain Resort: A scenic spot you can reach by gondola to the summit
• Happo-one: A famous place for trekking in summer and skiing in winter
• Hakuba Daisekkei (Great Snow Valley): See a snow valley that remains even in summer

Shopping spots:

• Hakuba Omiyage-kan: Stocked with local specialty products
• HAKUBA BREW PUB: A shop with local craft beer and specialty products
• Wadano no Mori: Stocked with Hakuba's handicrafts

Blissful Moments at Hakuba's Private Onsen

Hakuba's private onsen let you experience Japanese onsen culture in its most luxurious form. Surrounded by the majestic nature of the Northern Japan Alps, soaking slowly in a hot spring in your own private space will make the memories of your trip to Japan all the richer.

The Hakuba area is a rare place where you can enjoy hot springs of many different water qualities. Starting with Hakuba Happo Onsen, Japan's only natural hydrogen onsen, you can also enjoy "yumeguri"—touring the area's distinctive hot springs one after another.

An onsen enjoyed alongside scenery that changes with the seasons not only soothes the fatigue of body and mind but will surely become an unforgettable memory of your trip to Japan. When you visit Hakuba, be sure to enjoy a special experience at a private onsen.

About the Information in This Article (Notes and a Request)

Please note that prices generally vary by season and plan.

In particular, amid changes in the environment surrounding tourism—such as the current economic climate and the recovery of inbound demand—pricing may have been revised.

Please treat the prices given in this article as a rough guide only, and be sure to check the latest information on each facility's official website or other sources when you book.

It is generally known that people with tattoos can use a private onsen, but not all private onsen facilities allow tattoos. Some facilities have their own rules, so for your own peace of mind we recommend checking with each facility in advance.

Note that not all hotel booking sites are affiliated with the facilities.

In particular, please be aware that at older, smaller establishments, direct booking by phone is often still the main method.

Q&A for International Visitors

Q: Can I wear a swimsuit? A: In Japanese onsen culture, you usually bathe nude. However, some private onsen do allow swimsuits. It's best to check when you book.

Q: Can children come in too? A: Yes, families can bathe together at a private onsen. The age limit for bathing with a child of the opposite sex varies by facility, so please check.

Q: Can I wash my body in the onsen? A: No, do not wash your body inside the onsen tub. Wash your body at the washing area before entering the tub.

Q: How long should I bathe? A: In general, avoid soaking for a long time; aim for about 5–15 minutes and bathe while watching how you feel. If you start to feel unwell, get out of the water right away.