Right Onsen › Oita › Kokonoe
Yamazatonoyu
4.4★ · 484 Google ratings · Kokonoe, Oita · 炭酸温泉 山里の湯
✓ Day visitors✓ Private bath
Before you go
Can you bathe here?
Day visitors
✓ YesReported by two visitors
Hours
Not publishedCall ahead
Tattoos
? Call aheadNo policy stated in the 29 recent reviews we read
Price
¥700 adultConfirmed by recent visitor reports
Private bath
✓ AvailableConfirmed by recent visitor reports
How we know this
- Day visitors: Visitors used the bath as day-use guests without lodging. · 2 visitors, Mar 2026 – Jul 2026
- Price: Multiple visitors from 2025-11 to 2026-08 consistently reported a 700 yen day-use admission fee. · 3 visitors, Jul 2026 – Aug 2026
- Private bath: A family/private bath (kazokuburo) is available in addition to the main bath, sometimes used without reservation when free. · 3 visitors, Mar 2026 – Aug 2026
The 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.
Bath setup
Indoor baths
2.0Reported by two visitors
Outdoor bath
✕ NoReported by one visitor
Private bath
✓ YesConfirmed by recent visitor reports
Spring water
Spring type
carbonated springConfirmed by recent visitor reports
Source temperature
40°CReported by one visitor
Bath temperature
38°CReported by two visitors
pH
pH 6.1Reported by one visitor
How we know this
- Indoor baths: The main bath area has two indoor tubs of differing size and temperature. · 2 visitors, Jan 2026 – Mar 2026
- Outdoor bath: A visitor noted only two indoor baths, implying no outdoor bath. · 1 visitor, Jun 2026
- Private bath: A family/private bath (kazokuburo) is available in addition to the main bath, sometimes used without reservation when free. · 3 visitors, Mar 2026 – Aug 2026
- Spring type: Numerous visitors describe the water as a strong, bubble-forming carbonated (tansan) spring, some noting an iron-rust smell. · 4 visitors, Jan 2026 – Aug 2026
- Source temperature: One visitor stated the spring source is just under 40°C. · 1 visitor, Jan 2026
- Bath temperature: Visitors described the bathing water as around 38°C, a mild, non-scalding temperature. · 2 visitors, May 2026 – Aug 2026
- pH: One visitor cited a water analysis showing pH 6.1 with high free carbonic acid content. · 1 visitor, May 2026
Practical
What you need
Parking
✓ Free on siteFrom the facility's listing
Facilities
Lodging
✓ YesReported by two visitors
How we know this
- Lodging: Visitors noted that overnight stays are also available at this facility. · 2 visitors, Mar 2026 – Jul 2026
Getting there
How to get there
Nearest station
Bungo-Nakamura · JR Kyushu6.7 km in a straight line; bus or taxi from the station
Address
1268-2 Matsubara, Tano, Kokonoe, Kusu District, Oita〒879-4911 Oita, Kusu District, Kokonoe, Tano, 松原1268-2 · From the facility's listing
Show a driver
炭酸温泉 山里の湯The name in Japanese, for a taxi or at the counter
Phone
+81973-79-2516Japanese-speaking. For tattoos or private baths a call is the only sure answer
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What matters
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Questions
Common questions
Can I visit Yamazatonoyu without staying overnight?
Visitors used the bath as day-use guests without lodging.
How much does Yamazatonoyu cost?
Multiple visitors from 2025-11 to 2026-08 consistently reported a 700 yen day-use admission fee.
