Onsen OniOnsen Oni

Search Onsen Oni

Search onsen, areas, prefectures and pages.

Isohara Seaside Hotel

磯原シーサイドホテル

Rooftop and seaside baths fed by the hotel's own hot spring

Lodging
Kanto·Ibaraki

Bathing & Water

Natural onsen water

Uses natural hot spring water

Outdoor BathYes

Open-air outdoor bath

Indoor BathYes

Enclosed indoor bathing area

Views

Sea

About

Isohara Seaside Hotel sits on the Pacific coast in Kitaibaraki, with two baths drawing on its own natural hot spring. SORA, on the rooftop, opens onto open ocean and runs on a schedule that swaps between men's and women's hours through the day. NAMIMA is a windowed bath down at wave level, close enough to the shore to hear the surf. Rooms face the sea as well, and the older building keeps its worn-in, slightly retro character rather than having it polished away.

Loading map…

No reviews yet

Be the first to share your experience!

Onsen Oni

Last updated September 29, 2026