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 →
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.
In-room bath + reservable private bathfrom ~$204 / night
The details
- Area
- Minakami Onsen, Gunma
- Private bath
- In-room bath + reservable private bath — 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.
- Spring water
- weakly alkaline simple spring
- Water flow
- Free-flowing kakenagashi — poured straight from the source, not recirculated
- Private-bath hire
- Free
- Price guide
- From ~$204 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
You get both kinds of private here — a bath of your own, and reservable ones for the long soak. Most guests use both before checkout. You probably will too.
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 ~$204 / 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).
from ~$119 / nightView stay →
Reservable private bath
Shin Sarugakyo
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.
from ~$196 / nightView stay →