Right Onsen › Gunma › Kusatsu
Sekinoyu
4.0★ · 68 Google ratings · Kusatsu, Gunma · 関乃湯（共同浴場）
Before you go
Can you bathe here?
Day visitors
✕ Local residents onlyConfirmed by recent visitor reports
Hours
00:00–24:00From the facility's listing
Tattoos
? Call aheadNo policy stated in the 42 recent reviews we read
Price
Free adultConfirmed by recent visitor reports
How we know this
- Day visitors: Residents-only status enforced from 2020 onward due to COVID-19, though pre-2020 reviews show tourists could enter; recent reviews (2024–2025) confirm exclusion continues. · 5 visitors, Oct 2022 – Aug 2026
- Price: Free admission when available to visitors; multiple reviews from 2020–2024 state no charge. · 4 visitors, Oct 2019 – Dec 2024
Atmosphere
The bath
What you’ll find
Sekinoyu is a tiny free public bath in Kusatsu with a triangular tub holding 2–3 people maximum, fed by acidic sulfur spring; now residents-only since 2020.
Bath setup
Indoor baths
1.0Reported by one visitor
Outdoor bath
✕ NoReported by one visitor
Spring water
Spring type
sulfur, aluminum sulfate chlorideConfirmed by recent visitor reports
Bath temperature
47°CReported by two visitors
How we know this
- Indoor baths: One shared indoor bath with separate changing areas for men and women. · 1 visitor, Dec 2024
- Outdoor bath: Facility description identifies only indoor baths. · 1 visitor, Dec 2024
- Spring type: Official spring analysis (2024): sulfur, aluminum, sulfate-chloride (acidic, low-tension high-temperature); visitors confirm sulfur spring and slight sourness. · 3 visitors, May 2022 – Dec 2024
- Bath temperature: Temperature reported as 47°C (2022) and 42°C (2020) in visitor reviews; described as hot or comfortably warm depending on visit. · 2 visitors, Jan 2020 – May 2022
- Full spring description: sulfur, aluminum sulfate chloride (acidic, low-tension high-temperature)
Practical
What you need
English signage
✕ NoEntrance inconspicuous and hard to find; no mention of English signs despite tourist confusion.Reported by two visitors
How we know this
- English signage: Entrance inconspicuous and hard to find; no mention of English signs despite tourist confusion. · 2 visitors, Oct 2020
Timing
When to go
Quietest Sunday around 14:00. Busiest Wednesday around 14:00.
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Quiet Busy
Based on Google visit patterns, not a forecast.
Weekly hours
| Day | Hours |
|---|---|
| Monday | 00:00–24:00 |
| Tuesday | 00:00–24:00 |
| Wednesday | 00:00–24:00 |
| Thursday | 00:00–24:00 |
| Friday | 00:00–24:00 |
| Saturday | 00:00–24:00 |
| Sunday | 00:00–24:00 |
Getting there
How to get there
Nearest station
Haneo8.2 km in a straight line; bus or taxi from the station
Address
393 Kusatsu, Agatsuma District, Gunma 377-1711From the facility's listing
Show a driver
関乃湯（共同浴場）The name in Japanese, for a taxi or at the counter
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Nearby
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What matters
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Questions
Common questions
Can I visit Sekinoyu without staying overnight?
Residents-only status enforced from 2020 onward due to COVID-19, though pre-2020 reviews show tourists could enter; recent reviews (2024–2025) confirm exclusion continues.
How much does Sekinoyu cost?
Free admission when available to visitors; multiple reviews from 2020–2024 state no charge.
