Private open-air bath in your room
Aratashi Minakami
Every one of the 42 rooms has its own open-air bath filled with natural onsen — a soft alkaline spring, in a quiet concrete building above the gorge.
from ~$253 / nightView stay →
Two reservable baths are free on a 50-minute reservation at this small inn reopened in 2026 on the Sarugakyo lakeside — the water is the local weakly alkaline source.
Reservable private bathfrom ~$196 / night
The details
- Area
- Minakami Onsen, Gunma
- Private bath
- Reservable private bath — Two reservable baths are free on a 50-minute reservation at this small inn reopened in 2026 on the Sarugakyo lakeside — the water is the local weakly alkaline source.
- Spring water
- weakly alkaline spring
- Private-bath hire
- Free
- Price guide
- From ~$196 per night (checked on Klook, Nov 2026)
- Access
- In Minakami Town, Gunma, along the Tone River gorge below Mt Tanigawa
- Day-trip bathing
- Overnight stay only
The private bath works like this: you book it, it's yours. Door closed, steam up, nobody else's schedule anywhere near you. Take the late slot — night air on wet skin is the whole point.
Private-bath and water facts were checked against the property's official site and Japanese booking pages in November 2026. Room plans change — confirm the private bath is included in the plan you book.
Minakami Onsenfrom ~$196 / nightCheck on Klook →
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Reservable private bath
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A lockable family bath is free for guests, about 40 minutes at a time, in a riverside lodge run by a mutual-aid association (open to general guests too).
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In-room bath + reservable private bath
Ryuudo
A hot-spring theme park of a ryokan: 18 open-air baths scattered over the grounds, every one used privately, free, around the clock — plus rooms with their own open-air baths.
from ~$204 / nightView stay →