Retreat Villa 1/f
Deep-forest solitude with Japanese craftsmanship. Think crackling wood stoves, private onsen under the stars, bamboo forest views, and zero reason to leave your villa for hours. Not a spa hotel in the conventional sense — the forest itself is the amenity.
Suite 10 is the showpiece — 150m², highest open-air bath on the property, two separate bedrooms, mini kitchen, and sweeping views of Owakudani. Best villa for groups of 3-4.
Why It Matters
Every one of the 18 villas has a private hot spring bath — no shared onsen required. The property sits on the grounds of a 110-year-old sukiya-style ryokan where the Emperor stayed three times. Seven new villas were added in August 2024. Guests with tattoos (typically banned from public onsen) can soak freely in their private bath.
Hakone Retreat Villa 1/f is 18 fully private log cabin villas spread across a 50,000-square-meter forest in Sengokuhara — one of Hakone's highest and quietest plateaus at about 660 meters elevation. Every villa stands completely independent, comes with a wood-burning stove, kitchenette, and its own private hot spring bath. The site has roots going back to 1914, when the Hyoseki-kaku inn first opened and drew writers, artists, and the Imperial family. Adults only.
Where You'll Stay
12 room types available
Connecting Rooms — Suites 12 & 13 Combined
Suites 12 and 13 connected via a shared terrace. Each building retains its own private hot spring and garden — guests can move freely between them while keeping privacy. Total capacity 3–7 people. Best option for multi-family groups or friend groups who want communal space (Suite 12's large dining room and garden) plus individual retreat.
4 beds across 2 buildings (2000mm L × 1200mm W each) · 300 sqmForest Private Hot Spring Suite with Courtyard [Ibuki] — Suite 12
The largest single-building Ibuki villa at 180m². Has a dedicated dining room and kitchen, plus a large private garden with covered outdoor terrace — genuinely suitable for small gatherings or private parties. The spacious living room handles groups well while private bedrooms provide retreat from the group. Connects to Suite 13 via a terrace for families or friend groups needing up to 7 beds. Won the Good Design Award.
2 beds (2000mm L × 1200mm W each) · 180 sqm![Hot Spring Suite (Dog Friendly) [Ibuki] — Suite 14](/_next/image?url=https%3A%2F%2Fpglhaxlvkgwumauycvbw.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fshare-images%2Flodging%2Feb944259-44cd-49c6-be39-46b8f08208e4%2Fd90e2228c1583416-mpkr6j9m.webp&w=3840&q=75)
Hot Spring Suite (Dog Friendly) [Ibuki] — Suite 14
The only dog-friendly villa on the property. At 90m², it has the same Ibuki features — wood stove, wine cellar, private indoor hot spring — plus the freedom to bring your dog into the forest with you. Private garden views of the seasonal forest outside. Good Design Award winner.
2 beds (2000mm L × 1200mm W each) · 90 sqmPrivate Hot Spring Suite (3 Beds) [Ibuki] — Suite 15
Built into the natural slope of the hill, Suite 15's tiered layout integrates the terrain into the design — the living space sits one level lower, making it feel like the forest is right at floor level through the front windows. Three-person capacity (one person sharing a bed). Good Design Award winner.
2 beds (2000mm L × 1200mm W) + 1 shared · 90 sqmPrivate Hot Spring Suite (3 Beds) [Ibuki] — Suite 18
High-ceilinged villa with a wood stove installed at the center — the crackle of the fire fills the room and draws the eye upward into the vaulted space. High bedroom windows frame the greenery and flood the room with natural light. Three-person capacity. Wine cellar. Good Design Award winner.
2 beds (2000mm L × 1200mm W) + 1 shared · 90 sqmPrivate Hot Spring Suite (4 Beds) [Yuragi] — Suite 7
The 4-bed Yuragi villa for groups of up to four. Indoor hot spring bath, wood-burning stove, and the same forest-immersed ambiance. Slightly larger at 90m², with views into the bamboo and star-filled sky at night.
4 beds (2030mm L × 1130mm W each) · 90 sqmPrivate Hot Spring Suite [Ibuki] — Suite 17
The most architecturally distinctive of the new Ibuki villas. A large triangular window runs the full height of the room, pouring greenery and light into the space. A massive log pillar stands in the center of the guest room, creating a strong sense of being inside the forest itself. Wine cellar, wood stove, private indoor hot spring. Good Design Award winner.
2 beds (2000mm L × 1200mm W) · 90 sqmPrivate Hot Spring Suite [Yuragi] — Suites 1, 2, 3, 4, 11
Five nearly identical forest villas in the 'Yuragi' series. Each stands alone in the trees, with a wood-burning stove, indoor hot spring bath, kitchenette, and big windows framing bamboo forest and maple canopy. Waking up to sunlight filtering through the trees is the whole point. Indoor bath only — no open-air tub.
2 beds (2030mm L × 1130mm W each) · 80 sqmPrivate Hot Spring Suite with Courtyard [Ibuki] — Suite 13 (also Connecting Room option)
120m² Ibuki villa designed with barrier-free access — as few steps as possible throughout the entire room. Has its own hot spring and private garden. Connects to Suite 12 via a shared terrace when booked together, making the combined configuration (Suites 12+13) a 300m² retreat for 3-7 guests, each building maintaining its own hot spring and privacy. Good Design Award winner.
2 beds (2000mm L × 1200mm W each) · 120 sqmPrivate Hot Spring Suite with Courtyard [Ibuki] — Suite 16
120m² with a walled private garden — you can't be seen from outside at all. Has a dining table inside and an oversized family bathtub (separate from the hot spring), making it genuinely relaxed for families with young children. Good Design Award winner.
2 beds (2000mm L × 1400mm W) · 120 sqmPrivate Open-Air Hot Spring Suite [Yuragi] — Suites 5, 6, 8, 9
Same footprint as the standard Yuragi suites but with an open-air hot spring instead of an indoor bath — the big upgrade. Soak under moonlight and open sky, surrounded by forest. Suite 6 faces a view of Owakudani valley from the terrace. Suite 8 has an antique 1920 piano inside. Each one has a distinct character despite similar sizes.
2 beds (2030mm L × 1130mm W each) · 80 sqmSky Private Open-Air Hot Spring Suite [Yuragi] — Suite 10
The crown jewel of villa 1/f. At 150m² and perched on a hill — the highest point of the property — Suite 10 has the open-air bath closest to the moon on the entire grounds. Two separate bedrooms, two indoor cypress baths, plus the open-air rotenburo. Mini kitchen in the living room. The terrace delivers a sweeping panorama of Owakudani, Mt. Hakone, and Mt. Mikuni. Four guests max, ideal for two couples or a family.
4 beds (2030mm L × 1130mm W each) · 150 sqmThe Property
Eat & Drink
4 venues on property
Restaurant
Spa & Wellness
Treatment Menu
On Property
How you'll actually spend your days.
A curated library designed by BACH (led by book director Masataka Haba) with custom bookshelves and bookends made to fit the space. A thoughtfully assembled collection to settle into on slow mornings or late evenings.
An in-villa experience where seasonal aroma oils, fruits, cheeses, and chocolates are delivered to your private onsen bath. Seasonal themes (yuzu in winter, etc.). Request available year-round — one of the more memorable stay rituals here.
Explore Sengokuhara's susuki grass plains, Mt. Kintoki approaches, and local art museums on an electrically assisted bicycle. A Sengokuhara area map is provided. From ¥800/hour.
At dusk, relax on hammocks on the rooftop of the könoha spa building, listening to cicadas and the evening forest breeze. A simple, memorable summer-season experience that pairs well with the private onsen after.
Rent a private room inside the century-old Hyoseki-kaku for quiet solo work time. The highland air, silence, and greenery outside the window make it surprisingly effective. ¥1,100/hour, guests only, available 11:00am–4:00pm.
Self-guided yoga in the historic Hyoseki-kaku sukiya-style Japanese house. Yoga mats are provided — lay one down wherever the space feels right and breathe in the wood-scented air. Available morning and evening year-round.
Make your own monaka (a traditional Japanese confection) in the historic Hyoseki-kaku Japanese house. Combine wafers with various bean pastes and seasonal fruits — good for overseas visitors wanting a hands-on taste of Japanese craft culture.
Unique musical instruments including the kalimba (thumb piano) are available at the Free Bird & Terrace outdoor lounge. The sounds echo through the forest. Open to all guests and naturally facilitates interactions between couples, families, and solo travelers.
Chef-prepared picnic lunch boxes taken out to natural locations around Sengokuhara — Mt. Kintoki and Senjo Falls. Forest shade, highland breezes, and proper food. Year-round but particularly good in spring and summer.
Every one of the 18 villas has its own private hot spring bath. No shared facilities, no time limits, no tattoo restrictions. Options range from indoor hinoki cypress baths to open-air rotenburo facing forest, ponds, or mountain panoramas. The ultimate tattooed traveler workaround.
Amenities & Practical Info
The details that matter for planning.
Villa guests can order meals and in-bath delivery experiences to their private room. Contact property after check-in.
Villas are equipped with CD players and Bluetooth-compatible audio systems.
Available in Ibuki series villas (Suites 12–18) and Suite 15. Not present in Yuragi series.
The villa 1/f property is adults only. No minimum age restriction mentioned for spa guests, though spa treatments require guests to be 18+.
On-site free parking for up to 45 cars, no prior reservation needed.
All 18 villas have their own private hot spring — indoor hinoki baths, open-air baths, or both depending on the villa type. No shared bathing facility required.
BUILD YOUR HAKONE RETREAT VILLA 1/F PLAN
Rooms, dining, spa, and resort experiences — organized into one trip plan.
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