Right Onsen › Tokyo › Setagaya City
Masuhoyu
3.6★ · 217 Google ratings · Setagaya City, Tokyo · 増穂湯
✓ Day visitors✓ Sauna
Before you go
Can you bathe here?
Day visitors
✓ YesFrom the facility's listing
Hours
14:45–22:15From the facility's listing
Closed
FridayWeekly closing days from the listing
Tattoos
? Call aheadNo policy stated in the 41 recent reviews we read
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
The bath
What you’ll find
Masuhoyu is a traditional Tokyo neighborhood sento known for very soft, slippery groundwater; it has a sauna but no cold plunge, and tattoos are not allowed.
Bath setup
Indoor baths
2Reported by two visitors
Outdoor bath
✕ NoReported by one visitor
Sauna
✓ YesConfirmed by recent visitor reports
Cold bath
✕ NoConfirmed by recent visitor reports
Rest area
✓ YesConfirmed by recent visitor reports
Spring water
Bath temperature
40°CReported by two visitors
pH
pH 7.7Reported by two visitors
How we know this
- Indoor baths: Reviews from 2025 describe two indoor tubs, including a large bubble bath and a jet/reclining bath. · 2 visitors, Feb 2025 – Jun 2025
- Outdoor bath: A reviewer noted there is no outdoor bath. · 1 visitor, Apr 2025
- Sauna: Multiple reviews from 2025-2026 confirm the facility has a sauna, sometimes for an extra fee. · 3 visitors, Nov 2025 – Jul 2026
- Cold bath: Many reviews across 2025-2026 consistently report there is no cold plunge bath, only cold shower stations. · 6 visitors, May 2025 – Jul 2026
- Rest area: Several reviews from 2025-2026 mention seating and a TV in the changing area for resting. · 3 visitors, Nov 2025 – May 2026
- Bath temperature: Two reviews from 2025-2026 estimated the bath water temperature at around 40°C. · 2 visitors, Feb 2025 – Jun 2026
- pH: Reviewers reported the water pH as roughly 7.7 to slightly below 8, indicating alkaline soft water. · 2 visitors, Aug 2025 – Jul 2026
Guide
Good to know
Cold bath
Many reviews across 2025-2026 consistently report there is no cold plunge bath, only cold shower stations.
Confirmed by recent visitor reportsHair dryer
Coin-operated hair dryers are available for about 20 yen per 3 minutes, mentioned in several 2025-2026 reviews.
Confirmed by recent visitor reportsSoap & shampoo
Soap and shampoo are not provided at the washing stations but can be bought at the front counter, per multiple 2025-2026 reviews.
Confirmed by recent visitor reportsTowels
Reviewers reported towels can be purchased for about 100 yen, though one 2025 review said none were available at all.
Confirmed by recent visitor reportspH
Reviewers reported the water pH as roughly 7.7 to slightly below 8, indicating alkaline soft water.
Reports differ; reported by two visitorsPractical
What you need
Towels
For saleConfirmed by recent visitor reports
Soap & shampoo
For sale at the counterConfirmed by recent visitor reports
Hair dryer
✓ YesConfirmed by recent visitor reports
How we know this
- Towels: Reviewers reported towels can be purchased for about 100 yen, though one 2025 review said none were available at all. · 3 visitors, Jan 2025 – Jan 2026
- Soap & shampoo: Soap and shampoo are not provided at the washing stations but can be bought at the front counter, per multiple 2025-2026 reviews. · 3 visitors, Jan 2025 – Jun 2026
- Hair dryer: Coin-operated hair dryers are available for about 20 yen per 3 minutes, mentioned in several 2025-2026 reviews. · 4 visitors, Jan 2025 – May 2026
Timing
When to go
Quietest Thursday around 14:00. Busiest Thursday around 19:00.
| 8A | 9A | 10A | 11A | 12P | 13P | 14P | 15P | 16P | 17P | 18P | 19P | 20P | |
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| SU |
Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | 14:45–22:15 |
| Tuesday | 14:45–22:15 |
| Wednesday | 14:45–22:15 |
| Thursday | 14:45–22:15 |
| Friday | Closed |
| Saturday | 14:45–22:15 |
| Sunday | 14:45–22:15 |
Closed Friday.
Getting there
How to get there
Nearest station
Chitose-karasuyamaAbout 3 min on foot, 0.2 km in a straight line
Address
5 Chome-21-15 Minamikarasuyama, Setagaya City, Tokyo 157-0062From the facility's listing
Show a driver
増穂湯The name in Japanese, for a taxi or at the counter
Phone
+813-3300-2664Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
mobile.twitter.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 Masuhoyu without staying overnight?
Listed as a sento (public bathhouse): a bath for day visitors by definition. No visitor review states otherwise.
