Right Onsen › Gunma › Ota
Ojima Onsen Tone-no-Yu
3.4★ · 200 Google ratings · Ota, Gunma · 尾島温泉 利根の湯
✓ Natural hot-spring water✓ Free-flowing source water✓ Outdoor bath✓ Rest area
Before you go
Can you bathe here?
Day visitors
✓ YesA municipal day-use bathhouse open to non-residents for 500 yen, but it has had repeated temporary closures for renovation/construction work in 2025-2026 -- call ahead before visiting.stated by 8 visitors · Nov 2024 – Jun 2026
Hours
10:00–20:00 · closed Tuesdayfrom the facility listing
Tattoos
✓ AllowedMultiple reviewers confirm tattoos and irezumi are permitted, and one notes many fully-tattooed regulars.stated by 4 visitors · Feb 2025 – May 2026
Price
¥500Non-resident adults pay 500 yen for 3 hours; residents of Ota city pay 300 yen.stated by 9 visitors · Mar 2025 – May 2026
Time limit
3 hoursEntry covers 3 hours, with a 100 yen surcharge per additional hour.stated by 3 visitors · May 2025 – May 2026
Watch out
Day visitors
A municipal day-use bathhouse open to non-residents for 500 yen, but it has had repeated temporary closures for renovation/construction work in 2025-2026 -- call ahead before visiting.
stated by 8 visitors · Nov 2024 – Jun 2026The bath
What you’ll find
A municipal day-use bathhouse near Ota with indoor and outdoor baths, sauna and cold plunge, tattoo-friendly and cheap for non-residents, though prone to temporary construction closures.
Outdoor bath
✓ YesAn outdoor bath is present alongside the indoor baths.stated by 6 visitors · Apr 2025 – Jun 2026
Indoor baths
2Two indoor baths: a main tub and a jacuzzi.stated by 1 visitor · Feb 2026
Sauna
✓ YesA sauna is available.stated by 4 visitors · Jun 2025 – Feb 2026
Cold bath
✓ YesA cold plunge bath accompanies the sauna.stated by 2 visitors · Mar 2025 – Jun 2025
Rest area
✓ YesA small lounge/rest area with seating is available after bathing.stated by 2 visitors · Apr 2025 – Feb 2026
Restaurant
NoNo restaurant or food shop, only vending machines for drinks.stated by 1 visitor · May 2025
The water
Spring type
Sodium-calcium chlorideOne detailed review identifies the spring as a neutral, hypertonic, high-temperature sodium-calcium chloride spring.stated by 1 visitor · May 2025
Chlorinated
✓ YesTwo reviewers report a noticeable chlorine smell in the water.stated by 2 visitors · Mar 2025 – Jun 2025
Practical
What to bring
Soap & shampoo
✓ ProvidedRinse-in shampoo and body soap are provided at the washing stations.stated by 5 visitors · Apr 2025 – Feb 2026
Lockers
✓ Coin returnedLockers require a 100 yen coin that is refunded on unlocking.stated by 2 visitors · May 2025 – Feb 2026
Hair dryer
✓ YesFree hair dryers are provided (4 units, which can queue up when busy).stated by 3 visitors · Jun 2025 – Mar 2026
Guide
What visitors add
Price
Adult admission is ¥500 for non-residents of Ota city and ¥300 for city residents, the same price on all days (at least nine distinct reviewers cite ¥500 non-resident and/or ¥300 resident; one explicitly says the price is identical regardless of day of week). Two reviewers report ¥300 for elementary/junior-high children, and one reports ¥100 for preschoolers.
stated by 9 visitors · Nov 2024 – May 2026Outdoor bath & sauna
There is an outdoor bath (at least seven distinct reviewers, one calling it small but recommended) and a sauna (at least four distinct reviewers), plus a cold-water bath (two reviewers). One reviewer also lists a jacuzzi, a waterfall bath, and a walking pool reachable from the changing room.
stated by 8 visitors · Dec 2024 – Jun 2026Tattoos
Tattoos are allowed: three distinct reviewers state this explicitly, and four further reviewers report seeing tattooed bathers (one attributing it to the facility being publicly run). One reviewer warns that heavily tattooed bathers are numerous enough that they would not bring children.
stated by 7 visitors · Feb 2025 – May 2026Towels, soap & lockers
Rinse-in shampoo (or shampoo) and body soap are provided at the washing stations (five distinct reviewers). Shoe and changing-room lockers take a returnable 100-yen coin (three distinct reviewers; one notes there is no change machine). Dryers are free but one reviewer says there are only 4 units so they get crowded. No review mentions towel rental or included towels.
stated by 7 visitors · Apr 2025 – Mar 2026The water
One reviewer identifies the spring as sodium-calcium chloride (neutral, hypertonic, high-temperature). Reviewers conflict on strength: one calls the onsen concentration very high and salt-based/warming, one says the concentration seems low, one says the chlorine smell made it not feel like an onsen at all, and one describes it as colorless, transparent and odorless yet surprisingly effective.
stated by 5 visitors · Apr 2025 – Aug 2025Day-use visits
Admission covers a 3-hour session (three distinct reviewers); one reviewer reports an overtime charge of ¥100 per additional hour, and another says overtime is charged without giving the amount.
stated by 4 visitors · May 2025 – May 2026Timing
When to go
Quietest Friday around 10:00; busiest Sunday around 17:00. Measured by Google over past visits, not a forecast.
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Quiet Busy
| Day | Hours |
|---|---|
| Monday | 10:00–20:00 |
| Tuesday | Closed |
| Wednesday | 10:00–20:00 |
| Thursday | 10:00–20:00 |
| Friday | 10:00–20:00 |
| Saturday | 10:00–20:00 |
| Sunday | 10:00–20:00 |
Closed Tuesday.
Practical
Plan your visit
📍 196-1 Bizenjimacho, Ota, Gunma 370-0404
🚃 Hosoya station, 2.8 km
📞 +81276-60-7311
📋 Show at the counter: 尾島温泉 利根の湯
Nearby
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