Day Use
YesThe wood-heated hot bath (main indoor bath) is open Friday to Tuesday, 10:00 to 15:00, last entry 14:00, closed Wednesday and Thursday. The separate cold-spring sauna course runs Thursday to Tuesday, 9:00 to 18:00, last entry 16:00 (Thursdays open from 11:00, Tuesdays may close earlier), closed Wednesday. Both can also close for occasional extra maintenance days beyond this schedule.
The wood-heated hot bath alone is 700 yen for adults and junior/senior high schoolers, 500 yen for elementary age and under. The cold-spring sauna course is a 2-hour session, cash only: 2,500 yen for adults and high schoolers, 1,000 yen for junior high, 500 yen for elementary age and under. Cold-spring sauna guests can also use the gender-separated hot bath for free on days it's open.
Bathing & Water
Uses natural hot spring water
The about-page names the spring 単純硫黄冷鉱泉 (simple sulfur cold mineral spring) while the dedicated onsen-info page calls it 単純硫化水素泉 (simple hydrogen-sulfide spring); kept the dedicated onsen page's classification.
Open-air outdoor bath
Applies to the private family baths (半露天/semi-open-air), not the main indoor bath.
Enclosed indoor bathing area
Sauna room of any kind
Cold water plunge bath, typically used after sauna
Bathing Arrangements
Private bath available for day-use visitors or hotel guests to reserve
Reserved for overnight guests only, per the price page.
Private onsen bath in guest rooms, for overnight guests only
Rooms have only a washbasin (no toilet, no bath); all bathing is in the shared 互久楽湯, family baths, or cold spring.
Shared bathing area for all genders
A bathing garment (yuami-gi, 湯浴み着) or swimsuit is required for mixed bathing.
Policies & Services
Welcomes children and families
Inferred from published child/elementary-age pricing tiers; no explicit kids policy statement found.
Restaurant or dining open to visitors (not just hotel meal plans)
On-site or nearby parking available
Views
RiverHighlights
Drinking Spring
Lukewarm BathPrograms
About
Kannojigoku is unusual in the best way: it runs a cold hydrogen-sulfide spring in summer (July to September) alongside the hot baths, and soaking in near-icy sulfurous water is genuinely bracing. The lodge has a strong old-Japan feel, crackling firewood, dim corridors, home cooking around the hearth, and the remoteness (three-plus hours from Oita airport by bus) keeps the crowds away.
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Last updated July 22, 2026