Yamanami - Okuaso no Yado

産山温泉 奥阿蘇の宿 やまなみうぶやまおんせん おくあそのやど やまなみ

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Lodging
Kyushu & Okinawa·Kumamoto

Day Use

Yes
10:30–15:00

Day-use bathing runs 10:30-15:00, with last entry at 14:00, and the inn may have to turn day visitors away while the baths are being cleaned.

¥700

700 yen for the main bath (indoor kabocha-yu and outdoor shiki no yu); a family/private bath can also be reserved for 2,500 yen per hour in the same 10:30-15:00 window.

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Capabilities

Private BathYes

Private bath available for day-use visitors or hotel guests to reserve

Room OnsenYes

Private onsen bath in guest rooms, for overnight guests only

Mixed BathingNo

Shared bathing area for all genders

Policies & Services

KidsYes

Welcomes children and families

Child rates listed for infants and elementary-school-age children.

Rest AreaYes

Relaxation space for after bathing

ParkingYes

On-site or nearby parking available

Views

River
Forest

Programs

About

Yamanami is a hot-spring ryokan built into a hundred-year-old farmhouse, or kominka (古民家), on a small river in Ubuyama village, in the Aso-Kuju highlands of Kumamoto. The owner dug the spring himself and built the baths by hand: an indoor bath called kabocha-yu (かぼちゃ湯), walled in stacked stone, and an outdoor rotenburo, shiki no yu (四季の湯), that looks straight out onto the trees. The two alternate between men and women through the day, and the water runs in fresh around the clock rather than being recirculated (kakenagashi, 掛け流し). It is soft, silky water, the kind reviewers keep saying leaves skin smooth with no lotion needed after. Three smaller family baths round things out, wood barrels and stone-built among them, and a couple of rooms come with their own private open-air bath. The place still feels like the old farmhouse it is: you cross a small footbridge over the river from the parking lot, then worn wood floors and quiet but for the stream and birds outside. There is an outdoor irori (囲炉裏, fire pit) to sit by after a soak. Dinner runs on local wild vegetables, and the proprietress is known for the dozens of homemade pickles she puts out with it.

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Last updated July 17, 2026