Nasu Kogen no Yado Sansuikaku

A 13-room early-Shōwa wooden inn in the forest by the Nasu Imperial Villa, loved for its vintage-chair lounges, wagyu soy-milk shabu-shabu and attentive staff — but every bath, including the five in-room ones, is recirculated, there's no lift and no outdoor public bath

Sansuikaku is a 13-room inn in an early-Shōwa wooden building, set in a patch of forest near the Nasu Imperial Villa where trees may not be felled; a 2023 blogger was told the current owner is the sixth generation. Inside, it's been carefully renovated: a lobby and salons furnished with Japanese and Western design chairs, free coffee from 8:00 to 22:00 and a home-made yuzu liqueur from 15:00 to 18:00, and a sister inn, Nasu Bettei Kai, on the same grounds. Japanese guests rate it 4.64 across 80 reviews on one leading site (food 4.83, baths 4.43), 4.63 across 241 on another and 4.6 across 32 on a third. Bloggers who stayed in 2023, 2024 and 2025 describe a 'can't-go-wrong' inn: polished service, Nasu wagyu and pork in soy-milk shabu-shabu, a famously firm yuzu pudding, an inari snack left in the room at night, and big rooms with green views. Know what you're getting with the water: it's the Ōmaru Onsen simple spring — not the Shika-no-yu source of central Yumoto — and the inn states that the public, private and in-room baths are all recirculated and filtered, with water or heat added. The two public baths are small indoor tubs with no outdoor bath, and there's no lift in the three-storey building. In 2026 guests also mentioned trainee staff who fumbled dinner service, two-hour dinners, morning baths too hot to sit in, cramped changing rooms, cold in early spring and the odd fly or ants. Two-meal rates start at about ¥24,000–46,000 per person, depending on the room.