Four detached private family baths in cypress or cut stone — first use free for staying guests, then ¥1,100 per room. The inn states the water is 100% natural spring, free-flowing, no artificial onsen
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.
More in Kurokawa
Every room has its own indoor and open-air baths with free-flowing spring water, and the hilltop Tenku open-air bath can be reserved privately — free, 40 minutes at a time
Three private family baths — two open-air, one indoors — free for up to an hour, key from the front desk. Sources disagree on whether the water is fully free-flowing, so we make no claim either way
Each of the five detached villas has its own natural hot-spring bathroom and private sauna, usable around the clock. The official page mentions free-flowing spring water only in passing, so we don't promise it