Ito (Izu Kogen) 伊東・伊豆高原 — Shizuoka
In-room bath + reservable private bath
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.
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 inn's panoramic open-air bath — its own source, free-flowing — is hired privately for day-trip bathing in three 50-minute slots a day (up to three groups, booked by phone from three days ahead); for staying guests the same bath is shared.