Jozankei Onsen 定山渓温泉 — Hokkaido
In-room bath + reservable private bath
Every room has an onsen bath fed by the group's three self-flowing riverbed sources, and the Morinoyu private bath — open-air and indoor tubs — can even be booked by day visitors.
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.
More in Jozankei Onsen
Forest cottages and terrace rooms with their own open-air baths, filled straight from the source — a big Tsuruga resort an hour from central Sapporo.
Every room has its own hinoki onsen bath, and four reservable open-air baths are free to use as often as you like — a Kyoritsu resort in the Jozankei valley.
Most rooms look over the valley through a wall of glass with an onsen view bath beside it — the hotel dug for three years to find its own source.