Right Onsen › Gunma › Isesaki
Isesaki Yumaru Natural Onsen
3.8★ · 1,079 Google ratings · Isesaki, Gunma · 天然温泉 伊勢崎ゆまーる
✓ Day visitors✓ Outdoor bath✓ Sauna
Before you go
Can you bathe here?
Day visitors
✓ YesStated on the facility's website
Hours
09:00–00:00From the facility's listing
Last entry
23:30Stated on the facility's website
Tattoos
✕ Not allowedStated on the facility's website
Price
¥850 adultStated on the facility's website
How we know this
- Day visitors: stated on the facility's website, read 2026-09
- Last entry: stated on the facility's website, read 2026-09
- Tattoos: stated on the facility's website, read 2026-09
- Price: stated on the facility's website, read 2026-09
The bath
What you’ll find
A large super-sento style natural onsen facility in Isesaki with kakenagashi sodium bicarbonate chloride water, carbonated and electric baths, sauna, private bath rooms, and an on-site restaurant.
Bath setup
Outdoor bath
✓ YesConfirmed by recent visitor reports
Sauna
✓ YesConfirmed by recent visitor reports
Cold bath
✓ YesA stepped cold plunge bath exists, though one reviewer reported it had been out of service for a while at the time of their visit.Reported by two visitors
Family bath
✓ YesStated on the facility's website
Spring water
Spring type
sodium bicarbonate chlorideReported by one visitor
How we know this
- Outdoor bath: Multiple outdoor baths including a source-fed reclining bath and a hot cypress (hinoki) bath. · 5 visitors, Apr 2026 – Jul 2026
- Sauna: A large L-shaped high-temperature electric sauna seating 10+ people, mentioned repeatedly and positively. · 6 visitors, Apr 2026 – Jul 2026
- Cold bath: A stepped cold plunge bath exists, though one reviewer reported it had been out of service for a while at the time of their visit. · 2 visitors, Jun 2026 – Jul 2026
- Family bath: stated on the facility's website, read 2026-09
- Spring type: Natural sodium bicarbonate chloride spring with a faint clay-like smell; a separate reviewer notes carbonation and an electric bath are additionally offered. · 1 visitor, Apr 2026
Practical
What you need
Soap & shampoo
✓ ProvidedReported by two visitors
Hair dryer
✓ YesConfirmed by recent visitor reports
Parking
✓ Free on siteFrom the facility's listing
Accessibility
Step-free entrance, accessible restroom and accessible parkingFrom the facility's listing. Bath access not confirmed
Facilities
Rest area
✓ YesConfirmed by recent visitor reports
Restaurant
✓ YesConfirmed by recent visitor reports
How we know this
- Soap & shampoo: Shampoo, conditioner, and body soap are provided in the baths, with several shampoo choices in the private room. · 2 visitors, Apr 2026
- Hair dryer: Free hair dryers, upgraded to lightweight Refa-style units per two reviewers. · 3 visitors, Apr 2026 – Jun 2026
- Rest area: Multiple lounge areas with manga, TV and music exist, though one reviewer noted a tatami relaxation room they used to like had been removed. · 4 visitors, Apr 2026 – Jul 2026
- Restaurant: An on-site restaurant (Yumaru-tei) is cheaper than at comparable day-spas, with room service ordering from the private bath room. · 4 visitors, Apr 2026 – Jul 2026
Timing
When to go
Quietest Tuesday around 9:00. Busiest Saturday around 19:00.
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Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | 09:00–00:00 |
| Tuesday | 09:00–00:00 |
| Wednesday | 09:00–00:00 |
| Thursday | 09:00–00:00 |
| Friday | 09:00–00:00 |
| Saturday | 09:00–00:00 |
| Sunday | 09:00–00:00 |
Getting there
How to get there
Nearest station
Isesaki · JR East;TobuAbout 15 min on foot, 1.2 km in a straight line · step-free station
Address
1136-9 Otamachi, Isesaki, Gunma 372-0006From the facility's listing
Show a driver
天然温泉 伊勢崎ゆまーるThe name in Japanese, for a taxi or at the counter
Phone
+81270-75-4126Japanese-speaking. For tattoos or private baths a call is the only sure answer
Website
www.yumarl.comOfficial, in Japanese
The map loads only when you ask for it and connects your browser to Google.
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