the salon Izu Kogen Hotels & Resort
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

Shizuoka — 伊東・伊豆高原
6 stays with a private bath · In the Izu Kogen highlands of Ito, on the eastern coast of the Izu Peninsula
Every property listed here has a private bath — a reservable private bath or an open-air bath in your own room — so tattoos are a non-issue, and so is privacy.
Shizuoka · Getting there: In the Izu Kogen highlands of Ito, on the eastern coast of the Izu Peninsula
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.
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.
Villa annex rooms carry their own open-air baths, named in the hotel's own room list and the property-supplied listings as free-flowing source-water baths (源泉かけ流し).
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.
Prices are a guide from rates checked on Klook in November 2026 and change by date and room type — always confirm the live price on the booking page.