Ito (Izu Kogen) 伊東・伊豆高原 — Shizuoka
Reservable private bath
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.
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 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.