Right Onsen › Gunma › Annaka
Megumi-no-yu
3.8★ · 945 Google ratings · Annaka, Gunma · 恵みの湯
✓ Natural hot-spring water✓ Free-flowing source water✓ Outdoor bath✓ Rest area✓ Restaurant
Before you go
Can you bathe here?
Day visitors
✓ YesPublic day-use bathhouse; one reviewer notes an October closure for major renovation work was planned.stated by 2 visitors · May 2026 – Aug 2026
Hours
10:00–21:00 · closed Tuesdayfrom the facility listing
Tattoos
✓ AllowedNo tattoo ban or signage exists; multiple reviewers report large groups of tattooed bathers, and several found it uncomfortable enough to leave.stated by 6 visitors · Apr 2026 – Jul 2026
Price
¥600Standard adult entry is 600 yen for 3 hours, with longer options at 1100 yen (6hr) and 1600 yen (full day).stated by 4 visitors · Apr 2026 – Jul 2026
Watch out
Tattoos
No tattoo ban or signage exists; multiple reviewers report large groups of tattooed bathers, and several found it uncomfortable enough to leave.
stated by 6 visitors · Apr 2026 – Jul 2026The bath
What you’ll find
A cheap, popular public day-use bathhouse in Isobe Onsen (birthplace of the hot-spring symbol), with two indoor tubs, an outdoor bath, sauna, cold plunge and restaurant, but repeatedly reported as unrestricted for tattoos and often crowded with tattooed groups that make some visitors uncomfortable.
Outdoor bath
✓ YesAn outdoor bath is available alongside the indoor tubs.stated by 5 visitors · Mar 2026 – Jul 2026
Indoor baths
2Two indoor tubs at different temperatures.stated by 2 visitors · May 2026 – Jul 2026
Outdoor baths
1One outdoor bath.stated by 2 visitors · Mar 2026 – Jul 2026
Sauna
✓ YesA sauna is present, though descriptions vary between a small dry sauna near 90C and a mist sauna.stated by 4 visitors · Apr 2026 – May 2026
Cold bath
✓ YesA cold plunge bath sits beside the sauna.stated by 2 visitors · May 2026 – Jul 2026
Rest area
✓ YesRest areas and a large tatami hall are available.stated by 2 visitors · May 2026
Restaurant
✓ YesAn on-site restaurant is well regarded, though last-order timing has tripped up a couple of visitors.stated by 4 visitors · Apr 2026 – Aug 2026
The water
Spring type
Sodium chloride-bicarbonateOfficial analysis names it a sodium chloride-bicarbonate spring, though one casual reviewer called it a simple alkaline spring instead.stated by 1 visitor · May 2026
Source temperature
42°COne reviewer photographed the posted spring analysis: source temperature 42C.stated by 1 visitor · May 2026
pH
pH 6.9Posted spring analysis lists a near-neutral pH of 6.9.stated by 1 visitor · May 2026
Practical
What to bring
Soap & shampoo
✓ ProvidedShampoo and body soap are provided at each washing station.stated by 2 visitors · May 2026 – Jul 2026
Guide
What visitors add
Outdoor bath & sauna
The facility has two indoor baths (one warm, one lukewarm), a sauna with adjacent cold plunge, and an open-air bath — at least four reviewers mention the rotenburo, one praising soaking under open sky. Sauna reports vary: one measured it near 90C and calls it a proper sauna, another calls it small, and a third describes it as a mist sauna with good sweating. Regulars monopolizing the sauna is reported by two reviewers.
stated by 7 visitors · Mar 2026 – Jul 2026The water
The water is a colorless sodium spring described as slightly viscous and warming (two reviewers give matching descriptions; two more say it warms you well). One data-focused reviewer posts specs: source 42C, pH 6.9, 52 L/min (pumped), 34 g/kg, sodium-chloride-bicarbonate spring. Opinions on distinctiveness conflict: one reviewer overheard locals saying the water quality is nothing special, while another says quality recently seems improved.
stated by 6 visitors · Apr 2026 – Aug 2026Tattoos
Tattoos are effectively tolerated: five reviewers (April-July 2026) report tattooed bathers present, one noting there is no prohibition signboard and no entry restriction, with group sizes described as 'several', 'nearly 10', and 'around 20'. Note the tone: all five of these reviewers complain about it (noise, intimidation), so tattooed visitors can bathe here but the local reception is contentious.
stated by 5 visitors · Apr 2026 – Jul 2026Day-use visits
IMPORTANT: one reviewer (August 2026) reports the facility is scheduled to close for the whole month of October 2026 for major renovation work. Standard admission runs on a 3-hour limit (one reviewer), and the facility is open in the evening — one reviewer entered after 7 p.m. It is a public (municipal, Annaka city) day-use facility per two reviewers.
stated by 4 visitors · May 2026 – Aug 2026Price
Adult admission is 600 yen for 3 hours (confirmed by three reviewers, one noting it applies even on weekends); one reviewer details longer options of 1,100 yen for 6 hours and 1,600 yen for a full day. One reviewer says locals get a discount while outsiders pay the normal price.
stated by 4 visitors · Mar 2026 – Jul 2026Outdoor bath & sauna
There is also a sand/salt bath on the 2nd floor (three reviewers mention it; one says it appears to require a reservation, another simply loves the sand bath).
stated by 3 visitors · May 2026Timing
When to go
Quietest Wednesday around 10:00; busiest Sunday around 18:00. Measured by Google over past visits, not a forecast.
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Quiet Busy
| Day | Hours |
|---|---|
| Monday | 10:00–21:00 |
| Tuesday | Closed |
| Wednesday | 10:00–21:00 |
| Thursday | 10:00–21:00 |
| Friday | 10:00–21:00 |
| Saturday | 10:00–21:00 |
| Sunday | 10:00–21:00 |
Closed Tuesday.
Practical
Plan your visit
📍 3 Chome-3-41 Isobe, Annaka, Gunma 379-0127
🚃 Isobe station, 0.3 km
📞 +8127-385-1126
📋 Show at the counter: 恵みの湯
Nearby
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Annaka · 4.1★
Annaka · 4.1★
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