Right Onsen › Tokyo › Edogawa City
Tomonoyu
3.9★ · 315 Google ratings · Edogawa City, Tokyo · 友の湯
✓ Day visitors✓ Sauna
Before you go
Can you bathe here?
Day visitors
✓ YesFrom the facility's listing
Hours
13:00–00:00From the facility's listing
Closed
TuesdayWeekly closing days from the listing
Tattoos
? Call aheadNo policy stated in the 41 recent reviews we read or on the facility's website
Price
¥550 adultConfirmed by recent visitor reports
How we know this
- Day visitors: Listed as a sento (public bathhouse): a bath for day visitors by definition. No visitor review states otherwise. · from the listing category
- Price: Adult day-use bathing admission was consistently reported as 550 yen between 2025 and 2026. · 3 visitors, Apr 2025 – Apr 2026
The bath
What you’ll find
Tomonoyu is a traditional neighborhood sento (public bath) in Koiwa, Tokyo, known for very soft, slippery water and an extremely hot steam sauna, with many posted house rules and no on-site parking.
Bath setup
Sauna
✓ YesConfirmed by recent visitor reports
Cold bath
✓ YesConfirmed by recent visitor reports
Rest area
✓ YesReported by one visitor
Spring water
Spring type
soft waterConfirmed by recent visitor reports
Bath temperature
42°CReported by two visitors
How we know this
- Sauna: A separately paid, very hot steam sauna (around 500 yen with towel) was repeatedly described as extremely intense between 2025 and 2026. · 3 visitors, Oct 2025 – Feb 2026
- Cold bath: A small cold plunge bath (roughly 17-25°C depending on visit) was mentioned in several 2025 reviews. · 3 visitors, Apr 2025 – Nov 2025
- Rest area: A 2025 review noted that post-sauna resting space is limited to a changing-room bench or the bath area itself. · 1 visitor, Apr 2025
- Spring type: Multiple reviewers from 2025 to 2026 described the bath water as very soft (nan-sui), giving a smooth, slippery feel. · 3 visitors, Apr 2025 – May 2026
- Bath temperature: The main bath water temperature was reported as about 42°C in 2025 reviews. · 2 visitors, Aug 2025 – Dec 2025
Guide
Good to know
Hair dryer
Hair dryers are available but require payment (about 20 yen per 3 minutes), per 2025 reviews.
Reported by two visitorsLockers
Changing-room lockers require a 100 yen coin that is returned, as noted in 2025 reviews.
Reported by two visitorsRest area
A 2025 review noted that post-sauna resting space is limited to a changing-room bench or the bath area itself.
Reported by one visitorPractical
What you need
Soap & shampoo
✓ ProvidedConfirmed by recent visitor reports
Lockers
✓ Coin returnedReported by two visitors
Hair dryer
✓ YesReported by two visitors
How we know this
- Soap & shampoo: Rinse-in shampoo and body soap were reported as freely provided at the washing stations in 2025 reviews. · 3 visitors, Apr 2025 – Dec 2025
- Lockers: Changing-room lockers require a 100 yen coin that is returned, as noted in 2025 reviews. · 2 visitors, Apr 2025 – Oct 2025
- Hair dryer: Hair dryers are available but require payment (about 20 yen per 3 minutes), per 2025 reviews. · 2 visitors, Aug 2025 – Dec 2025
Timing
When to go
Quietest Monday around 13:00. Busiest Monday around 22:00.
| 8A | 9A | 10A | 11A | 12P | 13P | 14P | 15P | 16P | 17P | 18P | 19P | 20P | |
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Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | 13:00–00:00 |
| Tuesday | Closed |
| Wednesday | 13:00–00:00 |
| Thursday | 13:00–00:00 |
| Friday | 13:00–00:00 |
| Saturday | 13:00–00:00 |
| Sunday | 13:00–00:00 |
Closed Tuesday.
Getting there
How to get there
Nearest station
KoiwaAbout 8 min on foot, 0.7 km in a straight line
Address
5 Chome-1-3 Higashikoiwa, Edogawa City, Tokyo 133-0052From the facility's listing
Show a driver
友の湯The name in Japanese, for a taxi or at the counter
Phone
+813-3659-8160Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
tomonoyu.comOfficial, in Japanese
The map loads only when you ask for it and connects your browser to Google.
Nearby
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What matters
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Questions
Common questions
Can I visit Tomonoyu without staying overnight?
Listed as a sento (public bathhouse): a bath for day visitors by definition. No visitor review states otherwise.
How much does Tomonoyu cost?
Adult day-use bathing admission was consistently reported as 550 yen between 2025 and 2026.
