Right Onsen › Gunma › Kusatsu
Jizo Hot Spring
4.5★ · 878 Google ratings · Kusatsu, Gunma · 地蔵乃湯（無料共同浴場）
✓ Natural hot-spring water✓ Free-flowing source water
Before you go
Can you bathe here?
Day visitors
✓ YesOpen to tourists 8:00-22:00, though it is primarily a residents' communal bath and visitors are asked to be respectful.stated by 2 visitors · Apr 2026 – Aug 2026
Hours
08:00–22:00from the facility listing
Price
FreeFree to enter, as stated by multiple reviewers describing it as one of Kusatsu's free public baths.stated by 4 visitors · Mar 2026 – Jul 2026
Private bath
Yes, by reservationA separate private (kashikiri) bath exists alongside the communal bath, bookable by phone only.stated by 2 visitors · Apr 2026
Bathing arrangement
Men and women separateMen's and women's baths are separate, side-by-side rooms.stated by 3 visitors · Mar 2026 – Aug 2026
Tattoos
Not known · call aheadno policy stated in the 38 recent reviews we read or on the facility's website
Watch out
Soap & shampoo
There is no washing area or shower, so no soap/shampoo is provided; one reviewer complains of crowds not rinsing before entering the tub.
stated by 2 visitors · May 2026The bath
What you’ll find
A free historic public bathhouse (kyodo yokujo) in Kusatsu's Ura-Kusatsu district, with strongly acidic, milky-white indoor-only water, no shower area, and an optional reservable private bath.
Outdoor bath
NoOne detailed review states the bath is indoor-only.stated by 1 visitor · Aug 2026
The water
Spring type
Strongly acidic, milky-whiteRepeatedly described as a strongly acidic, milky-white (hakudaku) spring with visible mineral flakes (yu no hana).stated by 4 visitors · Apr 2026 – Jun 2026
pH
pH 2One reviewer measured/reported the water as pH 2, a strongly acidic spring.stated by 1 visitor · Jun 2026
Practical
What to bring
Soap & shampoo
Not provided — bring your ownThere is no washing area or shower, so no soap/shampoo is provided; one reviewer complains of crowds not rinsing before entering the tub.stated by 2 visitors · May 2026
Guide
What visitors add
The water
The water is milky-white/cloudy; at least five distinct reviews (Mar–Jun 2026) describe white or milky water, and one reviewer reports pH 2 strong acidity while another calls it strongly acidic.
stated by 7 visitors · Mar 2026 – Jul 2026The water
Water temperature is generally hot but varies unpredictably by day; at least four distinct reviews (Jun–Aug 2026) report that the temperature changes from visit to visit, and two reviewers report the water is said to help the eyes.
stated by 6 visitors · Mar 2026 – Aug 2026Towels, soap & lockers
There are no showers and no separate changing room — the changing area is inside the bathing room itself, and you carry your shoes in; at least five distinct reviews (Mar–Aug 2026) describe this. One reviewer itemizes the facilities: one water faucet, five wash basins, two stools, ten lockers, no shower.
stated by 6 visitors · Mar 2026 – Aug 2026Price
Admission to the communal bath is free; at least five distinct reviews (Apr–Jul 2026) describe it as a free bath.
stated by 5 visitors · Mar 2026 – Jul 2026Outdoor bath & sauna
The bath is indoor-only (one reviewer states 'indoor bath only'); no reviewer mentions an open-air bath or sauna. Outside the building there are a face-steam bath (kao-yu) and a foot bath, mentioned by at least four distinct reviews (Mar–Jun 2026).
stated by 5 visitors · Mar 2026 – Aug 2026Bathing arrangement
Baths are gender-separated (men's and women's rooms), confirmed by at least three distinct reviews; one reviewer (Aug 2026) notes the men's and women's sides can differ in temperature.
stated by 4 visitors · Mar 2026 – Aug 2026Timing
When to go
Quietest Thursday around 8:00; busiest Sunday around 12:00. Measured by Google over past visits, not a forecast.
| 8A | 9A | 10A | 11A | 12P | 13P | 14P | 15P | 16P | 17P | 18P | 19P | 20P | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| MO | |||||||||||||
| TU | |||||||||||||
| WE | |||||||||||||
| TH | |||||||||||||
| FR | |||||||||||||
| SA | |||||||||||||
| SU |
Quiet Busy
| Day | Hours |
|---|---|
| Monday | 08:00–22:00 |
| Tuesday | 08:00–22:00 |
| Wednesday | 08:00–22:00 |
| Thursday | 08:00–22:00 |
| Friday | 08:00–22:00 |
| Saturday | 08:00–22:00 |
| Sunday | 08:00–22:00 |
Practical
Plan your visit
📍 〒377-1711 Gunma, Agatsuma District, Kusatsu, 草津町草津299
🚃 Gunma-Otsu station, 8.1 km
📞 +81279-88-1320
📋 Show at the counter: 地蔵乃湯（無料共同浴場）
Nearby
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