Ito (Izu Kogen) 伊東・伊豆高原 — Shizuoka
In-room bath + reservable private bath
All seven rooms carry their own onsen open-air bath, and a larger indoor bath in the main building can be used privately, free, first-come, around the clock. The inn's own spring table discloses that the water is heated, topped up and circulation-filtered to hold temperature and hygiene.
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 Ito (Izu Kogen)
Every room has its own onsen bath — suites and up have a semi-open-air bath — and there is no shared bath at all. The water is piped in, heated and diluted rather than free-flowing
The rooftop open-air bath can be reserved for an hour at a time (¥1,980, same-day booking) — it is natural onsen with an ocean view. Rooms with open-air baths also exist, but the hotel does not state their water source, so only the rooftop bath is listed here.
The hotel's official onsen page says its family bath can be hired privately to enjoy free-flowing onsen around the clock; it is free for staying guests and needs no reservation. Premium rooms carry their own baths fed by the hotel's own spring.