Tateshina Shinyu Onsen

Seiryūtei (清流亭), the 45㎡ river-side Japanese rooms in the main building

The inn's only gorge-facing rooms (14 tatami, futons rather than beds) share a building and one lift with the lobby, baths and dining rooms. A May 2025 blogger chose corner room 401 for exactly that reason and found it brighter and larger than expected, with a neatly renovated bath and washbasin; an August 2026 guest called it spacious and spotted deer, and a returning January 2026 guest calls it their regular room. Across the corridor, Shinzantei's 45㎡ rooms face the hill and have beds.

Rooms with their own spring-fed open-air bath — Shinzantei (深山亭) open-air rooms and the Tateshina Club (蓼科倶楽部) suites

Shinzantei's 45㎡ open-air rooms (December 2020) have a hinoki bath in a small courtyard garden, and in February 2026 the Itō Sachio and Yanagiwara Byakuren suites in the ten literati-themed Tateshina Club suites (55–70㎡) reopened with large open-air baths and floor heating; the inn says both are fed straight from its own spring. A spring 2026 blogger on a repeat stay picked a fourth-floor room with an open-air bath — 'quite hot', and used morning and night — and a September 2026 guest in a special room called it superb. Not every Club suite has a fireplace or raised tatami area.

Suzurantei (すずらん亭) and Sangetsutei (山月亭), and anyone sensitive to upkeep

Suzurantei is the cheapest and smallest (25㎡ Japanese rooms) at the end of a long corridor away from the main building and not wheelchair-accessible; Sangetsutei (38㎡, with a river terrace) is in the annex, and guests in July and September 2026 found the walk to meals and baths long. A 2025 blogger noted that the top floors of both wings had no lift. Housekeeping complaints include dust on a bed shelf and all-artificial flowers (July 2026), a mouldy smell in a Tateshina Club room bath and in the bedrock bath (May 2026), and hair left on a shampoo bottle (October 2025).