Kitagawa Onsen · Atagawa Onsen × Stays Popular For SunsetsHot springHotel·Ryokan Ranking

Bousui is located in Kitagawa Onsen on the east coast of the Izu Peninsula. True to its name, the breathtaking views overlooking Sagami Bay reveal the grandeur of each season and bring a sense of calm to every traveler. About 100 meters from the Facility, right by the shoreline, you will find Kuroneiwa Bath, one of the very few seaside open-air baths in The whole country. The sunrise seen from this open-air bath is truly exceptional. In addition, Bousui offers private gazebos where you can enjoy sweeping ocean views as if they were yours alone—an experience unique to Bousui.

Reopening on November 1, 2025 as a small luxury Accommodation where every Room offers an ocean view and a private open-air bath with free-flowing hot spring water.Beyond the rising steam lies the horizon of Eastern Izu, where sea and sky melt into one. Listen to the soothing surf, and on moonlit nights a magical “Moon Road” appears across the water.Renowned hot spring water—300 liters per minute—flows from two private sources, gently easing both body and mind.Experience “Japanese cuisine of sea and time,” inspired by Izu’s climate and memories. Crafted by our head chef trained at long-established restaurants,each course is beautifully complemented by Sommelier Excellence–selected wines and local sake for a lingering finish.With only 16 Rooms, we offer complimentary room service—timeless new luxury unique to nostalgic Atagawa.

Regina Resort has taken over the operation of “Murin,” a renowned Ryokan in Izu Kogen long loved by distinguished guests from many fields, and has renewed and reopened it with upgraded Facilities and services as a Ryokan where you can stay with your beloved dog. From the open-air bath in every guest room, enjoy breathtaking views of Sagami Bay and the Izu Islands. Relax in authentic Japanese-style rooms in elegant sukiya-zukuri architecture, surrounded by a Japanese garden refined over time.