Hoshino Onsen × Stays Popular For SaunaRecommended Hotel·Ryokan

Kyu-Karuizawa is one of Japan’s leading resort destinations—a relaxing forest retreat for adults, set amid beautiful nature and refined culture. At Hotel Harvest Kyu-Karuizawa, nestled in this serene setting, you can enjoy deep relaxation and a luxurious stay.

In spring 2019, 22 new guest rooms and a private open-air bath were introduced! A hotel featured on TV and women's magazines. Just a 5-minute drive to Kyu Karuizawa and the Outlet. Situated in a quiet and convenient villa area. Dishes using plenty of vegetables are visually appealing and popular among women.

Renovated in August 2025, the entire property has been transformed into a new haven with luxurious rooms. All rooms are spacious 45㎡ suites with terraces, offering a serene retreat nestled in a tranquil forest. Each room's terrace provides a view of the beautiful pond in the courtyard. Choose from rooms with private saunas to soothe your travel fatigue, pet-friendly rooms to enjoy with your beloved dog, or open and airy maisonette-style accommodations. The facility also features a Japanese sake bar, "Onza Bar," where you can indulge in carefully selected premium sake, including local Shinshu specialties and Yoshikawa Brewery's "Afuri." Additionally, just a 5-minute walk away, the second restaurant "Pyrenees" offers seasonal hearth-cooked dishes prepared over a wood fire.

In front of you, Mount Asama, adjacent to "Karuizawa Taliesin." Revitalizing the Shiozawa area, over 5 hectares, a new Karuizawa. Changing the way to enjoy "Karuizawa," bringing new joy.

A private rental villa limited to one group per day, “COCO VILLA Karuizawa,” surrounded by Karuizawa’s rich natural beauty. Featuring a spacious wooden deck and BBQ grill, you can enjoy a luxurious Karuizawa stay while breathing in the crisp air and taking in the scenery of all four seasons. Accommodates up to 12 guests and includes parking for 3 cars, making it ideal for group trips with family or friends, as well as multi-generational stays. On the property, you’ll find an original sauna made with a 3D printer, offering a special “totonoi” experience you can only have here. In the relaxation area, enjoy deeply soothing moments that feel at one with the quiet of the forest. In addition, the living room is equipped with a pellet stove—its gentle flames and natural warmth make your time to unwind even more memorable.

Experience a luxurious stay in a sophisticated Scandinavian-designed log house, where you can enjoy quality time with your loved ones as if it were your own private villa. Savor the extraordinary everyday life while embracing the nature of Karuizawa and cherishing meaningful conversations.

About a 15-minute drive from Karuizawa Station, “Karuizawa HOUSE VILLA” is a private, whole-villa rental nestled in the forest.With the concept of “an adults-only hideaway to enjoy doing nothing,” our six villas each feature a distinct design.Choose from six different stay styles, including a sauna, footbath, hinoki cypress bath, a garden with dog run, and fully barrier-free options—each villa offers its own unique features.Spend an evening unwinding with wine and records by the wood-burning stove,gather around a bonfire or BBQ,or enjoy movies on the projector.Escape everyday life and experience a truly relaxing stay.Wi-Fi is available for workations and is ideal for longer stays.Enjoy refined time in Karuizawa’s nature—just like your own private holiday home.

SANU 2nd Home is “another home” where your mind and body can truly rest and your senses can open up.Step back from the pace of city life,feel nature with all five senses,and live by your own hands in a second home.Among the SANU 2nd Home locations across Japan, Karuizawa 1st is an easy 15-minute drive from Karuizawa Station, set amid majestic mountains and forests. Long loved as a summer retreat, this area blends nature and culture, with a distinctive food scene and a welcoming local community.The white vessel-like architecture is an eco-friendly cabin designed to live in harmony with the environment. Inspired by honeycomb forms, it features large windows that frame the surrounding landscape. The space comes alive through seasonal views reflected in those windows and wildflowers arranged in the dining room vase.In the morning, quietly grind coffee beans on the terrace as sunlight filters through the trees.In the afternoon, play a seasonal music playlist and let yourself sink into sound.In the evening, toast with natural wine while listening to insects sing.At night, add logs to the fire and lose yourself in thought.How you spend your time is entirely up to you.We hope you’ll find a way of staying that feels just right for you.

A wood-grain villa, “YURA/SHIRABE,” nestled among the lush trees of Karuizawa. Its name comes from “1/f fluctuation”—a soothing, comfortable rhythm found in nature and in human biological cycles, said to promote relaxation. This subtle “fluctuation” is present in many calming phenomena: heartbeats and brainwaves, a gentle breeze, the flicker of flames, and musical melodies. “YURA/SHIRABE” is a place to surrender to nature’s rhythm and gently bring mind and body into harmony. We hope you can quietly let go of everyday noise and restore your natural balance in an extraordinary setting. That wish is what inspired this villa.

In July 2025, "Luxe Villa" opened in Karuizawa, Onihata. This private villa rental offers a new travel style where you can stay as if you were living there. Surrounded by abundant nature, enjoy a relaxing escape from everyday life. The simple yet refined space is perfect for short stays, long-term visits, or remote work. Experience a special stay in Karuizawa with the feeling of having your own private retreat.

A fully private villa limited to one group per day, newly opened in August 2025 on the tranquil highlands of Nagakura, Karuizawa. Set on an exclusive 700㎡ property, this refined single-story retreat is your “second home” for time with family, friends, and loved ones.Unwind in bliss with a private sauna, hot tub, and spacious custom-built bath. Outside, you’ll also find a fully fenced private dog run of approximately 350㎡, so your dog can run freely and safely.About a 12-minute drive from Karuizawa Station, with easy access to Harunire Terrace and Hoshino Onsen. Surrounded by the highland’s seasonal beauty, enjoy a level of private luxury that no Hotel can offer.