Kitagawa Onsen · Atagawa Onsen × Accommodation For Enjoying Autumn FlavorsHot springRecommended Hotel·Ryokan

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.

A new-style Japanese resort that blends the tradition of an Izu Onsen Ryokan with Resort Hotel touches throughout. We welcome you with warm, refined hospitality worthy of the graceful name “Karen.” Our top recommendation is the scenic open-air bath “Aomi,” where you can enjoy abundant Onsen water flowing directly from our high-quality private source. Don’t miss the magnificent sunrise as you soak, or the “moon road” that appears on the sea on full-moon nights.

All rooms feature open-air hot spring baths with continuous flow. Isaribi - We assist you in enjoying the luxury of doing nothing.

Throughout your stay, we aim to offer more than relaxation—an experience that helps you and your loved ones become more beautiful. Drawing on the power of nature—local ingredients, Onsen, and our two gardens—we create moments that nurture beauty. Beauty takes many forms: outward qualities such as firmer skin, shinier hair, and a lifted appearance, as well as inner wellness such as detoxification, peace of mind, and renewed intellectual curiosity. Stroll through our two gardens and enjoy seasonal flowers and dappled sunlight—unwind your mind while giving your body a pleasant sense of exertion. Revitalize your skin, hair, and spirit with the renowned Okunetsukawa hot spring waters flowing directly from our private source, along with our in-house bath amenities “Yumoribito.” Savor carefully selected Izu seafood and the region’s distinctive mountain vegetables grown across its varied elevations. Enjoy gastronomic cuisine that delights both eye and palate, bringing energy to body and soul. As the journey lingers in memory, so does a sense of beauty in both mind and body. We invite you to experience it for yourself.

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.

Experience ultimate relaxation with two types of complimentary private baths, the only sand bath in Izu, seasonal gourmet cuisine, and luxurious rooms enveloped in tranquility. Enjoy heartfelt hospitality for a deeply rejuvenating escape for your mind and body.

The highlight of Atagawa-kan is its breathtaking panoramic view of the ocean. You can also enjoy an open-air hot spring bath while feeling the sound of waves and the sea breeze. Relax and savor a peaceful moment with Izu Oshima right in front of you.

The vast ocean and a naturally flowing hot spring source Set along the coast with views of Izu Oshima, “Oyado Fugetsu Muhen” offers Rooms all equipped with open-air baths, so you can relax anytime without worrying about the clock. Secluded detached guest Rooms stand quietly amid magnificent nature. A soothing private hot spring source springs up within the grounds. Savor kaiseki cuisine lavishly prepared with seasonal ingredients from local Izu and The whole country! Now introducing a special touch of hospitality: all Rooms are equipped with ReFa hair dryers and straightening irons. *Please check the photos and Plan details for more information.*