Kojoen
湖上苑こじょうえん
Lakeside sulfur baths at a small Lake Chuzenji ryokan
Day Use
NoBathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Bathing Arrangements
A private bath you can reserve for yourself or your group
Free private bath, no reservation needed, available 15:00-21:30
Shared bathing area for all genders
Policies & Services
Shower, wash stations, soap and shampoo provided
On-site or nearby parking available
Free, 13-car guest parking, no advance reservation needed
Views
LakeAbout
Kojoen is a small ryokan right on the shore of Lake Chuzenji, only ten rooms, all facing the water. Bathing is simple: one outdoor and one indoor bath each for men and women, plus a free private bath any guest can use without booking, all fed by the same milky sulfur spring, kept flowing fresh from the source. On a clear day the outdoor bath looks straight out over the lake. The building stands on the former grounds of a foreign ambassador's villa, and although it's aged, it keeps an intimate, old-fashioned charm.
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Last updated September 19, 2026