Kitagawa Onsen · Atagawa Onsen × Accommodation With Minibar Guest RoomRecommended 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.

All guest rooms feature open-air baths with ocean views, offering a prime location overlooking the Izu Islands, including Izu Oshima floating in the Pacific Ocean. At our restaurant, we use seafood from Sagami Bay and carefully selected ingredients from Izu to offer creative Western course menus, Japanese kaiseki-style courses, and shabu-shabu courses. Drinks at the restaurant, lounge access at the café terrace, and in-room refrigerator items are included in the accommodation rate, allowing you to enjoy a comfortable resort stay with magnificent views.

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.

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.

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.

5 minutes from Izu-Atagawa Station. In December 2023, rooms with semi-open-air baths will open! Unique rooms, such as those with open-air baths overlooking the sea, are also popular. Meals can be enjoyed in the room or at the restaurant, savoring fresh seafood unique to Izu. Feel free to consult us for celebrating special anniversaries. Relax and enjoy private time with your loved one in six private baths with natural Onsen hot spring water, including open-air baths.

Akazawa Guest House, surrounded by crystal-clear seas and unspoiled nature, is a refined Accommodation where you can enjoy a private stay in a serene setting. On an expansive estate of over 1,000 tsubo, we offer 15 guest rooms with open-air baths. We also feature detached villas equipped with private saunas in the room. Each room overlooks a beautiful Japanese garden and the surrounding landscape, showcasing the beauty of Japanese architecture through details such as Ajiro-woven ceilings and Juraku plaster walls. The interior is also designed in calming traditional Japanese style, with a large public bath featuring deep ocean water and private dining rooms where you can savor carefully crafted Japanese cuisine centered on locally sourced ingredients. In a space that harmonizes with Akazawa’s natural surroundings, enjoy a soothing stay as time passes quietly by.

【Private Open-Air Onsen with Ocean View】 All rooms feature a nostalgic Showa-era ambiance and offer stunning ocean views! Enjoy natural onsen in your private open-air bath, paired with a hearty whole simmered kinmedai fish served as an in-room meal. The large open-air bath can be reserved for private use. You can also take home "Yunohana" (onsen minerals) as a souvenir upon departure. Experience an affordable and memorable trip to Izu!