Right Onsen › Gunma › Minakami
Ikoi-no-yu
4.0★ · 149 Google ratings · Minakami, Gunma · いこいの湯
✓ Natural hot-spring water✓ Free-flowing source water✓ Rest area
Before you go
Can you bathe here?
Day visitors
✓ YesThough mostly used by locals, outside visitors are welcome for the same 300 yen fee.stated by 2 visitors · Jan 2024 – Apr 2024
Hours
10:00–22:00from the facility listing
Price
¥300Adult admission is 300 yen, consistent across nearly all reviews from 2023 through 2026.stated by 6 visitors · Dec 2023 – Aug 2026
Tattoos
Not known · call aheadno policy stated in the 40 recent reviews we read or on the facility's website
Watch out
Soap & shampoo
No soap, shampoo, or amenities are provided; many reviewers advise bringing your own wash kit.
stated by 6 visitors · Apr 2024 – Jun 2026Source temperature
Source temperature readings vary by time of day, from about 45°C up to over 50°C in the morning (one measurement: 48°C); many reviewers report the water as painfully hot and need to add cold water before entering.
stated by 4 visitors · Aug 2024 – Mar 2025Payment
Payment is cash only via a ticket vending machine, which may reject new 1000-yen bills — bring coins or an older bill.
stated by 2 visitors · Jun 2024 – Feb 2026The bath
What you’ll find
An unmanned, coin-ticket communal bath in Sarugakyo Onsen with one indoor kakenagashi tub running very hot (often 45-50C), no soap or amenities provided, cheap at 300 yen, but with very limited free parking and cash-only payment.
Outdoor bath
NoThe bath is indoor only; there is no outdoor bath.stated by 1 visitor · Aug 2026
Indoor baths
1There is a single indoor tub, fitting about five people.stated by 2 visitors · Feb 2024 – Aug 2026
Rest area
✓ YesA small tatami rest area is available near the entrance, though very modest in size.stated by 3 visitors · Oct 2025 – Aug 2026
The water
Free-flowing (kakenagashi)
✓ YesThe bath is fed by genuine kakenagashi (free-flowing) source water, confirmed extensively by reviewers.stated by 6 visitors · Aug 2024 – Aug 2026
Source temperature
48°CSource temperature readings vary by time of day, from about 45°C up to over 50°C in the morning (one measurement: 48°C); many reviewers report the water as painfully hot and need to add cold water before entering.stated by 4 visitors · Aug 2024 – Mar 2025
Practical
What to bring
Payment
Cash onlyPayment is cash only via a ticket vending machine, which may reject new 1000-yen bills — bring coins or an older bill.stated by 2 visitors · Jun 2024 – Feb 2026
Soap & shampoo
Not provided — bring your ownNo soap, shampoo, or amenities are provided; many reviewers advise bringing your own wash kit.stated by 6 visitors · Apr 2024 – Jun 2026
Hair dryer
NoNo hair dryers are provided, per multiple reviewers.stated by 3 visitors · Feb 2024 – Aug 2026
Guide
What visitors add
Price
Admission is 300 yen for adults (unchanged across the whole review period): fifteen distinct reviewers from Dec 2023 through Aug 2026 cite 300 yen; non-locals are welcome at the same price per two reviewers.
stated by 15 visitors · Dec 2023 – Aug 2026The water
The water is usually VERY hot: ten distinct reviewers describe scalding heat; measured/estimated figures include 45°C+, ~46°C, ~47°C in the morning, and 48°C on a thermometer (30-second maximum soak), with two reviewers relaying that the source itself exceeds 50°C; mornings are hottest. A minority found it moderate: one evening visitor found it not hot, one measured ~42–43°C on a December morning, one found it lukewarm during a pump failure, and one (Jan 2024) felt it milder than 4 years earlier.
stated by 14 visitors · Dec 2023 – Aug 2026Staffing
The bathhouse is essentially unmanned — buy a ticket at the entrance vending machine and drop it in a box on the attendant counter: seven distinct reviewers (2023–2026) describe it as unmanned/self-service. However, an elderly attendant is sometimes present: two reviewers found a gruff/rude old attendant on duty (Jan and Dec 2024), and one (Aug 2026) found a neighborhood grandpa asleep at the counter who was gone an hour later.
stated by 10 visitors · Dec 2023 – Aug 2026The water
The water is colorless, clear and essentially odorless/characterless: six distinct reviewers describe it as colorless/transparent with no taste or smell; one detected a soft gypsum (sekko) scent, one compared it to a milder version of Kusatsu water, and three report strong sweating or long-lasting warmth and smooth skin afterwards.
stated by 8 visitors · Feb 2024 – Aug 2026Water handling
The bath is gensen kakenagashi (source flow-through): eight distinct reviewers (2024–2026) say so, one praising exceptional freshness of the water; bathers routinely add cold tap water themselves because the source arrives extremely hot.
stated by 8 visitors · May 2024 – Aug 2026Towels, soap & lockers
No soap, shampoo, or amenities are provided and there is no hair dryer — bring your own: eight distinct reviewers (2024–2026) say so; one reviewer notes a 100-yen coin locker exists.
stated by 8 visitors · Feb 2024 – Aug 2026Timing
When to go
Quietest Tuesday around 13:00; busiest Sunday around 18:00. Measured by Google over past visits, not a forecast.
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Quiet Busy
| Day | Hours |
|---|---|
| Monday | 10:00–22:00 |
| Tuesday | 10:00–22:00 |
| Wednesday | 10:00–22:00 |
| Thursday | 10:00–22:00 |
| Friday | 10:00–22:00 |
| Saturday | 10:00–22:00 |
| Sunday | 10:00–22:00 |
Practical
Plan your visit
📍 346 Sarugakyoonsen, Minakami, Tone District, Gunma 379-1403
🚃 Kamimoku station, 9.6 km
📞 +81278-66-0296
📋 Show at the counter: いこいの湯
Nearby
Other baths close by
Kawaba · 3.8★
Minakami · 4.2★
Minakami · 4.0★
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