Bathing & Water
Uses natural hot spring water
Source: Kusatsu Onsen (Mandaikou), acidic chloride-sulfate spring per the site's spring-quality table.
Open-air outdoor bath
This is the '半露天風呂' (semi open-air bath), one of three private baths, labeled 'Open-Air Bath' on the EN site.
Enclosed indoor bathing area
檜風呂 and 石風呂 are indoor bathrooms (浴室) with a window, distinct from the 半露天 bath.
Capabilities
Private bath available for day-use visitors or hotel guests to reserve
Private onsen bath in guest rooms, for overnight guests only
Guest rooms are on the 2nd floor; all bathing is downstairs in the three shared/reservable baths, so rooms have no own onsen bath.
Shared bathing area for all genders
All three baths are private/reservation-only (貸切), used exclusively by one party at a time, so there is no shared mixed bathing.
Policies & Services
Welcomes children and families
A 2025 reviewer stayed comfortably with an 8-month-old baby; no official kids policy stated on the site.
Shower, wash stations, soap and shampoo provided
Relaxation space for after bathing
On-site or nearby parking available
Views
ForestAbout
Vent Vert is a small family-run pension a quiet, uphill walk from Kusatsu's Yubatake. It has three separate baths, an open-air one facing the forest, plus a cypress-wood room and a stone one, each filled with the town's own spring water and booked by one party at a time with no time limit. The water is sharp and acidic on the skin, without the sulfur smell many people expect from Kusatsu. Opened in 1979 and named Vent Vert (French for green wind) after a perfume the founder once gave his wife, the inn is now run by her family's third generation and reopened after a full renovation in 2023. Dinner is a Western-style course the owner cooks himself, built around local ingredients.
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Last updated July 30, 2026