Kitagawa Onsen · Atagawa Onsen × Recommended Accommodation For BabymoonRecommended Hotel·Ryokan

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.

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.

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.

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

The breathtaking view of Oshima Island and the azure sea, an unobstructed sky, and a serene forest wrapped in lush greenery. Experience this stunning scenery at the private villa "Gran Atagawa" in Izu-Atagawa. Perched on a hilltop, the villa offers panoramic views of majestic nature that changes with each season. Indulge in luxurious moments while gazing at the sparkling blue sea and Oshima Island. The interior features a private bath using natural Onsen water, along with a fully equipped sauna and cold plunge pool. At night, enjoy movies or videos in the theater space with a large projector screen. With four bedrooms accommodating up to 16 guests, it is perfect for family trips, group gatherings, or multi-generational stays. Sophisticated interiors and comfortable spaces add charm to your special day. Located about 8 minutes by car from Atagawa Station. Escape from your busy daily life to this place of relaxation and rejuvenation!

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.

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.*

【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!