としまや月浜の湯
Ocean-view sulfur baths at a small seaside ryokan
Day-use bathing is also suspended on the day before a public holiday, even if it falls on one of the usual open weekdays.
Bath towel rental costs 330 yen. A face towel isn't rented, only sold, for 385 yen.
Uses natural hot spring water
Open-air outdoor bath
Enclosed indoor bathing area
A private bath you can reserve for yourself or your group
Private onsen bath in guest rooms, for overnight guests only
Shared bathing area for all genders
Welcomes children and families
A restaurant or dining room open to visitors, not only meals for overnight guests
Shower, wash stations, soap and shampoo provided
Soap, shampoo and the rest are in the shared baths only. The private baths have none, so bring your own if you book one.
Towels to rent or borrow at the desk
Toshimaya Tsukihama no Yu is a small seaside ryokan at Isohara onsen, on the Ibaraki coast. The two main baths, Hamami-no-yu (浜見の湯) for women and Tsukimi-no-yu (月見の湯) for men, each pair an indoor tub with an open-air one facing the Pacific, the Okita river and the Abukuma mountains. There are also two private open-air baths, Kaigetsu-no-yu (海月の湯) and Tenpi-no-yu (天妃の湯), plus a couple of guest rooms with their own onsen bath, one of them built in stone. The spring itself is a mild sulfur water, the kind valued locally for the skin. The onsen dates back to a well a previous owner dug at the foot of Mt. Tenpi in the early 1930s, which struck the spring by chance. His friend, the poet Noguchi Ujo (野口雨情), wrote it into a local folk song, and that is how Isohara's hot spring became known. The in-house restaurant serves fresh fish landed at the nearby harbors and takes walk-in diners as well as overnight guests, and outside bathers can use the baths during a short day-use window on some weekdays.
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Last updated September 29, 2026