Onsen in Shinjuku | An Authentic Hot Spring Experience in the Heart of Tokyo

An Onsen in Shinjuku? An Authentic Hot Spring Experience in the Heart of the City

Are There Onsen in Shinjuku?

It may be hard to believe that there are hot springs right in the center of a huge city like Shinjuku, but in fact several onsen facilities are scattered throughout the area. Many of them use natural hot spring water transported from distant sources or tap into natural springs welling up from underground, so a genuine onsen experience is fully possible.

Shinjuku's onsen facilities fall broadly into the following three types:

At Shinjuku's onsen facilities, you can not only experience traditional Japanese hot spring culture firsthand but also enjoy services designed with foreign visitors in mind. A growing number of facilities station English-speaking staff or provide multilingual signage, so you can use them with peace of mind and without feeling a language barrier.

The Features and Appeal of Shinjuku's Onsen

The greatest appeal of Shinjuku's onsen facilities is the chance to enjoy an authentic hot spring experience while staying in the heart of the city. They also offer the following features:

• Great access: Located within walking distance of major stations, easy to drop by between sightseeing stops
• A variety of hot springs: Some facilities let you enjoy water brought in from famous hot spring areas such as Hakone and Izu
• Paired with night views: Open-air baths on the upper floors offer sweeping views of the Shinjuku skyline at night
• Well-equipped: Beyond the baths, facilities also feature saunas and relaxation spaces
• A taste of Japanese culture: Wearing a yukata and dining on Japanese cuisine let you experience Japanese culture as a whole

A particular favorite is the view of Shinjuku at night from open-air baths perched on the upper floors of high-rise buildings. By day, these spaces offer a tranquil Japanese setting that lets you forget the urban hustle; by night, you can soak in the hot spring while gazing at the glittering city lights — a luxurious experience unique to Shinjuku.

Popular Onsen Facilities in Shinjuku

Thermae-Yu Shinjuku

"Thermae-Yu Shinjuku" is a 24-hour bathing facility in Shinjuku's Kabukicho district. Its open-air bath uses natural hot spring water delivered daily from "Jindai-no-Yu" in Naka-Izu — a sodium-calcium sulfate spring (hypotonic, alkaline, high-temperature) with benefits for neuralgia, muscle pain, poor circulation, and fatigue recovery. There are also a wide variety of other baths, including a high-concentration carbonated spring, jet baths, and saunas. With a women-only "Nordic Coral Light lotion bath," stone-bed bathing, relaxation services, esthetics, a restaurant, and a café, the facility is well-equipped to refresh both body and mind. Access is convenient, too, making it perfect to stop by between sightseeing and shopping.

Onsen Bathing Etiquette Every Foreign Visitor Should Know

To get the most out of Japan's hot spring culture, it helps to know the basic etiquette. Here is the onsen bathing etiquette that foreign visitors in particular should keep in mind.

Basic Etiquette Before Bathing

1.Getting ready in the changing room

• In the changing room, remove all of your clothing and bathe nude
• Put valuables in a locker, or ask the front desk to hold them
• Don't bring a bath towel into the bathing area; take only a small towe

2.Using the washing area before bathing

• Always wash your body before getting into the bath
• The washing area has stools and a shower or a basin
• Wash your whole body with soap and shampoo, then rinse thoroughly

How to Behave in the Bath

1.Bringing a towel into the bath

• You can bring in a small hand-towel-sized towel, but putting it into the bath water is not allowed
• Rest it on top of your head or set it on the edge of the bath

2.Etiquette in the bath

• Don't swim or talk loudly in the bath
• Stay quiet so you don't disturb other bathers
• Try not to occupy the same spot for a long time

Other Points to Keep in Mind

1.About tattoos

• Traditionally, Japanese culture has associated tattoos with organized crime (the yakuza), and many onsen facilities prohibit bathing for people with tattoos
• Recently, a growing number of facilities have eased these rules for foreign tourists, but we recommend checking in advance

2.Advice for people with long hair

• Tie up long hair before getting into the bath
• Keeping your hair out of the bath water is part of the etiquette

How to Choose a Foreigner-Friendly Facility

When foreign visitors want to enjoy an onsen, it's a good idea to consider the following points when choosing a facility.

1. Language support: Choose a facility with English-speaking or multilingual staff
2. Tattoo policy: Check the facility's tattoo policy in advance
3. Access: Choose a facility with good access from major stations
4. Pricing: Choose a facility that fits your budget (as a rough guide, around ¥1,000 for a public bathhouse and around ¥2,000–¥3,000 for a day-use onsen; prices vary by facility and area)
5. Privacy: A facility with a family bath or private bath lets you enjoy the onsen in a more private setting

If you're experiencing a Japanese onsen for the first time, it's a good idea to start with a ryokan or hotel that's used to welcoming foreign tourists, or with a large onsen facility. With staff to guide you and multilingual instructions on hand, you can use the facility with confidence and without getting lost in the bathing etiquette.

A Superb Japanese Experience at a Shinjuku Onsen

The onsen facilities scattered throughout the great metropolis of Shinjuku are valuable spots where foreign visitors can experience the essence of Japanese culture. Soaking in a hot spring while gazing at the Shinjuku night view from an open-air bath high up in a skyscraper is a special experience you can only have in Japan.

Stay at an onsen ryokan and you can also enjoy time spent in a yukata in a Japanese-style setting. At a day-use onsen or public bathhouse, you can drop by casually between sightseeing stops to ease your tiredness.

Understanding bathing etiquette and respecting Japan's hot spring culture make for an even more rewarding onsen experience. As more and more facilities let you enjoy the onsen to your heart's content without feeling a language barrier, do take the chance to experience Japan's hot spring culture during your stay in Shinjuku.

The quiet time in the water, which lets you forget the urban hustle, is sure to become a wonderful memory of your trip to Japan. At a Shinjuku onsen, enjoy a superb Japanese experience that warms both body and soul.

About the Information in This Article (Please Note)

• Prices generally vary depending on the season and the plan.

In particular, given recent economic conditions and the recovery in inbound tourism demand, pricing may have been revised as the environment surrounding tourism changes.

Please treat the prices introduced in this article as a rough guide only, and be sure to check the latest information on each facility's official website when making a reservation.

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

Not all hotel reservation websites are affiliated with the facilities.

In particular, note that at small, long-established facilities, direct reservation by phone may still be the main method.

Q&A for Foreign Visitors: Answering Your Questions About Onsen in Shinjuku

Here are answers to some frequently asked questions from foreign visitors, in Q&A format:

Q1: Can I wear a swimsuit in a Japanese onsen?

A: As a rule, you cannot wear a swimsuit in a Japanese onsen. Bathing fully nude is the norm. If it really bothers you, choosing a hotel with a private bath or private onsen is a good option.

Q2: Can I enter an onsen if I have tattoos?

A: Policies differ by facility. At facilities that actively welcome foreign tourists, such as "ONSEN RYOKAN Yuen Shinjuku," it's increasingly common to be allowed in if the tattoo is small. We recommend checking when you book or before entering.

Q3: Can I bathe in an onsen with my children?

A: Young children can bathe together with a parent of the same sex. However, age limits differ by facility, so we recommend checking in advance.

Q4: Do I need to bring my own bathing items?

A: Large onsen facilities often provide amenities such as towels, shampoo, and body soap, but at a public bathhouse you'll need to bring your own towel and soap, or rent or buy them for a fee. It's a good idea to check the facility's information in advance.

Q5: Can I use an onsen facility even if I don't speak Japanese?

A: At large onsen facilities and those in tourist areas, English signage and multilingual staff are increasingly common. Facilities popular with foreign tourists in particular, such as "ONSEN RYOKAN Yuen Shinjuku," offer extensive multilingual support. Language support may be limited at small facilities like public bathhouses, but as long as you understand the basic bathing etiquette, you should have no trouble using them.