Hisui-no-Yu
ひすいの湯ひすいのゆ
Day-use onsen complex with a distinctively scented salty spring and mountain views
Day Use
YesClosed one day per month (in June, every Tuesday). Check the official site for the current month's schedule.
Adults: 1,000 yen daytime (10:00-16:00) / 800 yen evening (16:00-22:00). Children (3+): 550 yen daytime / 500 yen evening. As of May 2026 opening hour changed to 12:00.
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
A private bath you can reserve for yourself or your group
Shared bathing area for all genders
Policies & Services
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Towels to rent or borrow at the desk
Relaxation space for after bathing
On-site or nearby parking available
Views
MountainsHighlights
Utaseyu
Jet BathAbout
Hisui-no-Yu sits in Itoigawa, Niigata, and draws its water from a fault running the length of Japan. The spring is salty with a faint petroleum-like scent that surprises first-timers but is quite characteristic of this type of water. The outdoor bath looks out toward the Northern Alps, the indoor bath runs hot, and there are also a jet bath, a reclining bath, a waterfall shower, and a sauna circuit with a cold plunge. Private baths are available for those who want a quieter soak. The crowd is almost entirely local, which gives the whole place a relaxed, neighborhood feel.
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Last updated September 19, 2026