Nasu-Onsen Shinshun no Kago Hewitt Resort
Modern ryokan minimalism. Forest retreat, not a flashy resort. The vibe is quiet, adult-oriented, and forest-immersive — heavy on indirect lighting, cedar and natural materials, and the meditative hiss of sulfur water.
The lounge is a genuine bar — you can order cocktails and it stocks the same local Nasu craft beer as the restaurant, but for free. Pre-load there before dinner to reduce your drinks bill (beer ¥1,200 / sake ¥2,000 per go at the table).
Why It Matters
One of the very few properties in the Nasu onsen area combining private in-room saunas, a Michelin Guide listing, and a Tablet Hotels selection — all opened in late 2024. The sulfur spring is unusually concentrated (guests literally see yellow deposits form on the tap nozzles), and the complimentary lounge doubles as a proper bar with craft cocktails and local Nasu craft beer.
Opened in November 2024, this 20-room forest ryokan sits in the hot spring village of Nasu Yumoto, about 2.5 hours from Tokyo by shinkansen. The design is clean and minimalist — high ceilings, cedar paneling, soaring glass windows that frame the surrounding trees — with every single room getting its own semi-open-air onsen fed by a milky-white sulfur spring flowing straight from the source. Select rooms also come with private saunas. Communal areas include a fireplace-warmed lounge with complimentary drinks, an art-book library stocked with Karuizawa whiskies, and a small restaurant serving seasonal Japanese course dinners built around local Nasu ingredients.
Where You'll Stay
8 room types available
Deluxe Twin
51 sqm Deluxe Twin without a private sauna but with the signature semi-open-air onsen included in all rooms. Sleeps up to five. A solid mid-tier choice if the sauna is not a priority.
51 sqmDeluxe Twin — with Private Sauna
A spacious 70 sqm deluxe twin with private sauna and semi-open-air onsen. The largest of the Deluxe tier rooms, sleeping up to five. The sauna version runs larger than the non-sauna Deluxe.
70 sqmKamoshika Family Suite (氈鹿ファミリースイート) — with Private Sauna
An 82 sqm suite designed specifically for families, with private sauna and onsen. Named after the Japanese serow (kamoshika), a mountain deer native to Nasu. Sleeps up to four.
82 sqmMorishun no Kago Suite (森旬の籠スイート) — with Private Sauna
The flagship suite. Generous living space with private semi-open-air onsen and a dedicated private sauna. Designed for up to four guests, with forest views through floor-to-ceiling glass. Cedar paneling, high ceilings, bespoke Ploh bedding.
72 sqmOrurimachi Suite (大瑠璃スイート) — with Private Sauna
The largest room category at 82 sqm, accommodating up to six guests. Private sauna plus semi-open-air onsen. Named after the orurimachi (blue flycatcher bird), endemic to the Nasu forest.
82 sqmPremium Twin — with Private Sauna
54 sqm twin room with private sauna and semi-open-air onsen. Mid-tier between the suites and standard deluxe, sleeping up to four. Designed with the same cedar-and-glass aesthetic as the suites.
54 sqmSuperior Twin — with Balcony
The entry-level room at 40 sqm. Has a balcony and the standard semi-open-air onsen. Guests report the room feels compact (and the sulfur scent is noticeable), but the food and lounge fully compensate. Sleeps up to four.
40 sqm
Superior Twin Plus Sofa Bed
An enhanced Superior room at approximately 39.2 sqm with an added sofa bed for extra guests. Includes shower but no indoor bath beyond the semi-open-air onsen.
39.2 sqmThe Property
Eat & Drink
2 venues on property
Restaurant
Spa & Wellness
Treatment Menu
On Property
How you'll actually spend your days.
The hotel sits within Nasu Yumoto's forested highland area. Guests can walk directly into the surrounding nature from the property, listening to birdsong and stream sounds that the hotel actively promotes as part of its experience. The broader Nasu area has extensive hiking trails on Mt. Nasu.
The ground-floor lounge is stocked with a curated library of art books and a selection of Karuizawa whiskies, set against forest views. Free for all guests.
In-room private sauna available in suite and select deluxe/premium room types. Use it on your own schedule without booking.
Amenities & Practical Info
The details that matter for planning.
Free Wi-Fi throughout all 20 rooms and common areas. Expedia notes speeds of 25+ Mbps.
All rooms come with: TV, refrigerator (stocked with complimentary drinks including tea, water, sparkling water, juice), electric kettle, in-room safe, toothbrush, full toiletry set (shampoo, conditioner, body soap, facial soap), towels, hairdryer, razor, slippers, and samue (traditional Japanese loungewear).
Front desk staffed around the clock. Check-in 14:00–24:00, check-out by 11:00.
Soft drink vending machines on-site. Note: no alcohol vending — alcohol is available at the lounge (complimentary) or at dinner (charged).
Complimentary shuttle between the hotel and Nasushiobara Shinkansen station. Capacity 8 passengers, first-come first-served. Must be reserved at least 3 days in advance by phone.
25 parking spaces, free of charge for guests. No valet.
Shared communal onsen bath on-site, in addition to the private in-room baths. Natural sulfur hot spring. A bathing tax of ¥150 per person applies.
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