Enveloped in mist, lose yourself. The unprecedented, dreamlike pinnacle of “ととのい” woven by three kinds of steam

A new kind of fully private sauna where steam and mist intertwine
【SAUNA霧宙】

In Ryogoku, Sumida, Tokyo—tucked away in a corner of a neighborhood known as the sacred home of sumo—lies “SAUNA霧宙(サウナむちゅう),” a dreamlike space that makes you forget the everyday.
With the concept “Enveloped in mist, free to be absorbed,” it offers fully private luxury saunas that fuse cutting-edge technology with original, inventive features.
Its hallmark is a unique sauna experience that combines three different kinds of steam: mist, löyly, and a steam generator.
With online reservations and an unmanned check-in system, you can immerse yourself in deep, personal relaxation without interruption.
The two private rooms, uniting design and functionality, are fully equipped—from the sauna room and cold bath to a relaxation area.
In an art-like space where light and mist intertwine, enjoy a special moment that frees both body and mind.

Top 3 recommended points

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1. Two enchanting private rooms created by mist and light

We offer two rooms with distinct atmospheres to choose from according to your occasion.
「Mist Room」 (up to 4 people): Pursues deep relaxation that satisfies the five senses. Equipped with a full-flat bed, it leads you into deep totonoi while lying down.
「Sky Room」 (up to 5 people): An active space to enjoy a floating sensation. Its standout feature is resting in a hammock, letting you experience a new kind of totonoi as if floating in midair.
Both rooms feature carefully designed lighting so the mist looks its most beautiful.

© sauna-muchu

2. One-of-a-kind “totonoi” gimmick 「Kirichu Mist×Cold-Head Splash」

Exclusive services available only at SAUNA霧宙 accelerate your totonoi.
Kirichu Mist: With a single button, fine mist is generated from the top of the sauna room. The gentle vapor envelops your entire body.
Cold-Head Splash: Pouring cold water from above your head inside the sauna creates an intense temperature contrast, delivering a refreshing sensation said to equal three sets in just one.
Mist Totonoi: Mist also descends from above the cold plunge, helping dissipate heat from the head and face while letting you enjoy the pleasure of natural waterfall spray.

© sauna-muchu

3. A luxurious customization experience designed to your liking

In addition to Finnish-style self-löyly, choose from four original aromas to surround yourself with your preferred scent.
The cold plunge allows temperature adjustment by adding ice (for those who want it extra-chilled).
Furthermore, the 「Sky Room」-exclusive 「Steam Sandwich」 sandwiches your whole body between heat rising from your feet and löyly from above, offering the ultimate sense of embrace.
Along with abundant amenities, the drink menu is also extensive, including the sauna favorite 「Oropo」 and detox water.

© sauna-muchu
 

Other recommended information

Mixed-gender & group use OK: Unusually for a private sauna, mixed-gender use is allowed. Suitable for dates, friends, business meetings, and more.
Insta-worthy photos allowed: The space is designed so the mist looks beautiful, and photography is freely permitted. Social media posts are welcome—capture a dreamy shot you can only take here.
Come empty-handed: High-quality amenities are provided, including cleansing products, face wash, toner, shampoos, and towels. Stop by whenever the mood strikes.
Smooth unmanned check-in: From booking to entry, everything is completed online. Use the facility without meeting anyone—ideal for those who value privacy.

References

BASIC INFORMATION

Name SAUNA霧宙
(サウナ・ムチュウ)
Address 1F, 30-5 Ryogoku 4-chome, Sumida-ku, Tokyo Access
Business Hours
【Mon・Tue・Wed・Thu・Fri】

08:30 - 02:30

【Saturdays, Sundays, and public holidays】
06:30〜26:30

Closed Days None
Reservation
Please make an advance reservation online.
Walk-ins without a reservation may not be accommodated.
VIP members may make reservations starting two months in advance; other customers starting one month in advance.
Parking
Parking: Not available

There are paid parking lots near the store; please use those.

Cancellation Policy Cancellations are free up to 36 hours before the reservation.
After that, cancellations are not permitted, so please note.
Pricing ■ 霧 -Kiri-(Capacity: 4 people)
・70 minutes
Guest: 5,000 yen〜
Member: 3,000 yen〜
・90 minutes
Guest: 9,000 yen〜
Member: 7,000 yen〜

■ 宙 -Sora-(Capacity: 5 people)
・90 minutes
Guest: 9,000 yen〜
Member: 6,000 yen〜
・120 minutes
Guest: 15,000 yen〜
Member: 12,000 yen〜

【Notes】
※ The above prices are per person; +3,000 yen per additional person
※ Kiri 70 minutes and Sora 90 minutes are morning-discount prices; other time slots +2,000 yen
※ Weekend/holiday surcharge applies to guest prices only (Kiri +1,000 yen, Sora +2,000 yen)
Payment Methods We do not accept cash.
All payments for rental items and merchandise are made via the QR code on the reservation site.
Official Social Media
Official URL https://sauna-muchu.jp/

FACILITY INFORMATION

Facility Information (Access)
Access
  • Near the station
    Near the station
  • Nearby coin-operated parking available
    Nearby coin-operated parking available
Facility Information (Usage)
Usage
  • Group bookings welcome.
    Group bookings welcome.
  • Reservation required
    Reservation required
Facility Information (Smoking)
Smoking
  • No smoking on premises
    No smoking on premises
Facility Information (Payment)
Payment
  • Credit cards accepted
    Credit cards accepted
  • Electronic money accepted
    Electronic money accepted
Facility Information (Facilities)
Facilities
  • Showers
    Showers
Facility Information (Services)
Services
  • Day-use bathing available
    Day-use bathing available
Facility Information (House Rules)
House Rules
  • Photography allowed
    Photography allowed

Nearby events

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    2026.10.23(金)
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    Chiyoda City Lecture & Culture
    2026.07.10(金)–09.06(日)
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  • 14.58 km

    Check Route
    Ota Ward Gourmet
    2026.09.26(土)
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