Kinnotake Sengokuhara — the ryokan where every room has a private onsen, not just a lucky few
If you want a private open-air onsen without crossing your fingers over which room you get — Kinnotake Sengokuhara is the answer, and the numbers back it up: Booking 9.7, which is as high as ryokan scores get. This adults-only inn sits on the elevated slopes of Sengokuhara, Hakone, and the quiet here is the real kind — not a marketing tagline. Guests who have been back year after year say the same thing: the service and the food make this place feel categorically different from an ordinary ryokan stay.
Kinnotake Sengokuhara is located at 817-342 Sengokuhara, Hakone-machi, Kanagawa, on the elevated heights of the Sengokuhara district, well away from the main tourist bustle. Getting here requires a Hakone Tozan Bus or the ryokan's own shuttle service — with limited departure times. That tells you straight away that this place was not designed for easy come-and-go; it was designed to make you not want to leave.
"Guests who come back time and again say the same thing: the onsen stays warm all night, the kaiseki is made from fresh seasonal ingredients plated beautifully, and the staff seem to know what you need before you ask — that is why so many people rebook year after year."
What sets Kinnotake Sengokuhara apart from many Hakone ryokan is that every room has its own rotenburo (open-air onsen) — not as an upgrade, not as an add-on, but as a standard feature of every booking. Whatever room you choose, a private open-air bath waits on your own terrace. Soak whenever you like, for as long as you like, without encountering anyone else — no queues, no public bath timetables, no sharing.
The most-talked-about room is the Hime Suite, which opened in April 2023 at a generous 131 sqm (90 sqm room + 41 sqm terrace), with an open-air onsen looking out over the mountains. For guests seeking a suite-level experience in Hakone, this is regularly cited as the most worthwhile choice at this price point.
Meals here are kaiseki, included in the room rate along with breakfast. Guest reviews praise the seasonal ingredients and the artistry of presentation — more than a few reviewers mention the dinner as being just as much a highlight as the onsen itself. The staff embody genuine omotenashi: they anticipate what you need before you ask, and every detail from room preparation to the shuttle schedule is handled with care.
As an adults-only property, the atmosphere here is genuinely quiet and private. There are no children's voices, no large tour groups. This is the kind of place suited to couples who want actual time alone together, or anyone who comes to Hakone to rest rather than to sightsee.
Worth knowing before you book: the location is remote from the nearest station. Public transport is limited to the Hakone Tozan Bus and the ryokan's shuttle (with fixed departure times), so if you want to explore other parts of Hakone during the day, plan your transport and timings carefully. The ryokan also does not accept children — families travelling with young kids will need to choose somewhere else.
To be straight about it: ¥75,000 per night for two is a honeymoon-level spend. But measured against what you get — a private onsen every night in your room, beautifully crafted kaiseki included in the price, and a Booking score of 9.7 confirmed by returning guests over many years — Kinnotake Sengokuhara is a ryokan that delivers more than its price implies for couples who genuinely came to stay.
Summary from Booking & Agoda
- ✓ Every room has a private open-air onsen — no room selection needed
- ✓ Adults only — quiet and genuinely private
- ✓ Kaiseki + breakfast included, with fresh seasonal ingredients
- ✓ Staff deliver true omotenashi — attentive to every detail
- ! Remote from the station — dependent on the ryokan shuttle or Hakone Tozan Bus
- ! Does not accept children — not suitable for families with young kids
- ! ¥75,000/night for two — a special-occasion budget
- ✓ New Hime Suite (opened Apr 2023) — 131 sqm with mountain-view onsen
- ✓ Quiet, unhurried atmosphere — built for proper rest, not just a one-night stop
- ✓ Booking 9.7 — highest score among Hakone ryokan in this list
- ✓ Kaiseki dinner receives as much praise as the onsen from reviewers
- ! Shuttle times are limited — plan your schedule at the time of booking
- ! No public bath option — onsen is exclusively in-room and private
- ! During cherry blossom and autumn leaves seasons, rooms fill fast and prices rise sharply
- 💡If you're travelling with children or as a family — this is a strict adults-only property → you will need to find a Hakone accommodation that accepts families.
- 💡If you want to explore other parts of Hakone during your stay — the shuttle runs on a fixed, limited schedule → check departure times when you book and factor in taxi costs if you need flexibility.
- 💡If you're planning to visit during cherry blossom (Mar-Apr) or autumn leaves (Nov) — rooms fill very quickly and prices rise 80-100% → book 3-6 months in advance and look for Free Cancellation rates if your dates are still uncertain.