Right Onsen › Oita › Kokonoe
Yamazatonoyu
4.4★ · 484 Google ratings · Kokonoe, Oita · 炭酸温泉 山里の湯
✓ Private day-use bath✓ Natural hot-spring water✓ Free-flowing source water
Before you go
Can you bathe here?
Day visitors
✓ YesVisitors used the bath as day-use guests without lodging.stated by 2 visitors · Mar 2026 – Jul 2026
Hours
Not published in the listing · call aheadno opening hours in the Google listing
Price
¥700Multiple visitors from 2025-11 to 2026-08 consistently reported a 700 yen day-use admission fee.stated by 3 visitors · Jul 2026 – Aug 2026
Private bath
✓ YesA family/private bath (kazokuburo) is available in addition to the main bath, sometimes used without reservation when free.stated by 3 visitors · Mar 2026 – Aug 2026
Tattoos
Not known · call aheadno policy stated in the 29 recent reviews we read
Watch out
Price
Multiple visitors from 2025-11 to 2026-08 consistently reported a 700 yen day-use admission fee.
stated by 3 visitors · Jul 2026 – Aug 2026Soap & shampoo
One visitor said shampoo is not provided and must be brought, while another noted only body soap was available with no shower.
stated by 2 visitors · Jun 2026The bath
What you’ll find
A small rustic carbonated-spring (tansan) bathhouse near a suspension bridge in Oita prefecture, famous for intense CO2 bubble baths; day-use costs 700 yen, last admission is 4pm, and shampoo is not provided.
Outdoor bath
NoA visitor noted only two indoor baths, implying no outdoor bath.stated by 1 visitor · Jun 2026
Indoor baths
2The main bath area has two indoor tubs of differing size and temperature.stated by 2 visitors · Jan 2026 – Mar 2026
Lodging
✓ YesVisitors noted that overnight stays are also available at this facility.stated by 2 visitors · Mar 2026 – Jul 2026
The water
Spring type
Carbonated spring (tansan)Numerous visitors describe the water as a strong, bubble-forming carbonated (tansan) spring, some noting an iron-rust smell.stated by 4 visitors · Jan 2026 – Aug 2026
Source temperature
40°COne visitor stated the spring source is just under 40°C.stated by 1 visitor · Jan 2026
Bath temperature
38°CVisitors described the bathing water as around 38°C, a mild, non-scalding temperature.stated by 2 visitors · May 2026 – Aug 2026
pH
pH 6.1One visitor cited a water analysis showing pH 6.1 with high free carbonic acid content.stated by 1 visitor · May 2026
Practical
What to bring
Soap & shampoo
Not provided — bring your ownOne visitor said shampoo is not provided and must be brought, while another noted only body soap was available with no shower.stated by 2 visitors · Jun 2026
Practical
Plan your visit
📍 1268-2 Matsubara, Tano, Kokonoe, Kusu District, Oita
🚃 Bungo-Nakamura station, 6.7 km
📞 +81973-79-2516
📋 Show at the counter: 炭酸温泉 山里の湯
Nearby
Other baths close by
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Kokonoe · 4.3★
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