Daimaru Ryokan
大丸旅館おおまるりょかん
Century-old ryokan on a carbonated spring, with riverside open-air baths
Day Use
YesAdults 500 yen, children (ages 3 to elementary school) 300 yen
Bathing & Water
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
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
On-site or nearby parking available
Views
RiverAbout
Daimaru Ryokan has been running since 1917 in Nagayu (長湯), a spa town in Oita famed for its carbonated springs. The water flows fresh and unaltered, kakenagashi style, into outdoor baths above the Serigawa river, an indoor communal bath, and several private family baths. Guests also get free, unlimited access to the nearby Ramune Onsenkan (ラムネ温泉館, Ramune Onsenkан), a few minutes' walk away. The ryokan has eight rooms in a classic old-inn style, and breakfast is cooked with the spring water itself.
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Last updated September 19, 2026