Sengokubar
Contemporary minimalist meets Japanese slow-living. Art-forward — para-art installations throughout from Suminasu Inc. (artists with disabilities from Saga). Intimate, quiet, private. More design hotel than traditional ryokan in feel, but the bathing culture is fully authentic.
The restaurant takes reservations from non-hotel guests via TableCheck — worth booking even if you're just passing through Hakone
Why It Matters
One of the few properties in Hakone where every suite comes with its own private onsen, dry sauna, and adjustable water bath — all fed by Owakudani spring water. Added to the Michelin Guide and Tablet Hotels selection. Can also be entirely bought out as a private estate for up to 15 adults.
Sengokubara COCON is a five-suite luxury ryokan sitting 800 meters above sea level in Hakone's Sengokuhara highland, born from a complete renovation of a former company facility. The property spans a 3,300㎡ garden and pairs serious Japanese bathing culture — think Owakudani hot spring water piped directly into every room, a herbal bath blended from 12 local plants, and semi open-air communal baths beside a miniature bamboo garden — with a design sensibility that leans hard into European furniture brands like Edra, Poltrona Frau, and Bonaldo. Dinner is modern French from an open kitchen, breakfast is traditional Japanese. Only 15 rooms' worth of guests total will ever be here on any given night, which is the whole point.
Where You'll Stay
5 room types available
Forest View Suite "AOI"
From JPY88,000 / nightThird of the three second-floor forest-view suites. Same 92㎡ layout and private bathing trifecta as SHO and NENE. Accommodates up to 3 guests with the living-room extra bed option. Each room's owner-selected furniture distinguishes it from its neighbors.
Two semi-double beds (extra semi-double in living room for 3rd guest) · 92 sqmForest View Suite "NENE"
From JPY88,000 / nightSecond-floor forest-view suite identical in footprint to SHO at 92㎡. Same private onsen, sauna, and water bath setup. Interiors differ in furniture selection, making each of the five rooms feel distinct despite the consistent suite template. Up to 3 guests.
Two semi-double beds (extra semi-double in living room for 3rd guest) · 92 sqmForest View Suite "SHO"
From JPY88,000 / nightSecond-floor forest-facing suite at the entry-level price point. At 92㎡ it's genuinely spacious — two semi-double beds, its own Owakudani onsen, dry sauna, and water bath. A third guest can be accommodated with an extra bed in the living room. Designer furniture gives each room its own character.
Two semi-double beds (extra semi-double in living room for 3rd guest) · 92 sqm
Terrace Suite "BOU"
From JPY99,000 / nightMoves up to the third floor and adds a private terrace to the 92㎡ interior footprint. Guest reports confirm this is the room where Mt. Fuji can occasionally be spotted on clear days. Breakfast can be served in-room or at the restaurant. Couples only — capacity is 2.
Two semi-double beds · 92 sqm
The Luxury Suite "AYA"
From JPY148,500 / nightThe flagship. Third floor, 126㎡, two separate bedrooms each with two semi-double beds — the only room sleeping 4 guests. Largest of the five suites and priced accordingly at ¥148,500 per person based on double occupancy. Same private onsen, sauna, and water bath as the other suites, but with significantly more living space. Breakfast can be in-room or restaurant.
Two rooms, each with two semi-double beds · 126 sqmThe Property
Eat & Drink
1 venue on property
Restaurant
Spa & Wellness
Treatment Menu
On Property
How you'll actually spend your days.
Concierge team provides suggestions for nearby galleries, museums (Pola Museum, Lalique Museum), and walking routes. Free hotel shuttle covers Kowakidani and Togendai stations, plus local attractions within a 15-minute radius.
Wander the 3,300㎡ property grounds, which include a miniature bamboo garden, herb garden with seasonal plantings, and open lawn areas. Each section shifts with the seasons — the susuki grass fields directly outside the gate peak in golden autumn color.
The property keeps mascot goats in a yard near the main gate — a quirky and surprisingly charming touch that guests consistently mention. Worth a visit on arrival or after a morning bath.
The hotel sits within a highland forest area with walking routes into the surrounding Sengokuhara woodland. Staff can suggest routes and nearby gallery and studio stops.
Para-art installations and design pieces created by artists from Suminasu Inc. (Saga Prefecture, which supports independence of individuals with disabilities through art) are displayed throughout the property. All artwork and select furniture pieces are available for purchase via the concierge.
The first-floor lobby shop stocks original COCON products, local items, and artworks. A good stop on checkout morning.
Amenities & Practical Info
The details that matter for planning.
The building has no elevator. All movement between floors (lobby on 1F, suites on 2F and 3F) is by stairs only. Important for guests with mobility limitations.
Complimentary wireless internet access throughout property including all rooms.
All rooms include complimentary minibar items, flat-screen TV, writing desk, tea and coffee facilities, safe, and phone.
Electric vehicle charging available on site.
Free self-parking on site, no reservation required.
Full concierge service including local sightseeing recommendations, restaurant reservations, and transportation coordination.
24-hour reception with English-speaking staff.
Property offers private check-in and a VIP exclusive entrance option for guests.
Official online store at coconma.base.shop selling original COCON products.
Complimentary shuttle to Hakone Tozan Railway's Kowakidani Station, Hakone Ropeway's Togendai Station, Hakone Sengokubara Heliport, and local attractions within 15-minute radius.
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Rooms, dining, spa, and resort experiences — organized into one trip plan.
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