An observation open-air bath with the soothing scent of Kanagawa hinoki and sweeping views of the Hakone outer rim mountains
Kanagawa Hakone Town, Ashigarashimo District
"Hakone Hotel Kowakien" is a hot spring resort in Hakone Town, Ashigarashimo District, Kanagawa Prefecture, which had its grand opening in July 2023. From the "observation open-air bath with a view bath" on the top floor, you can take in a sweeping view of the lush Hakone outer rim mountains. The large public bath is equipped with an authentic dry sauna lavishly finished with local Kanagawa-grown hinoki cypress. You can enjoy an exquisite totonou experience surrounded by the rich aroma of hinoki. With a cold plunge bath, a charming Goemon open-air bath, private baths, and more, the facilities are highly varied, and overnight guests can use the adjacent Yunessun as much as they like for free.
TypeNatural Hot Spring
An open and spacious observation large public bath located on the top floor of the hotel, 6th floor, with a panoramic view of the lush Hakone outer rim mountains. It can be enjoyed on a rotating schedule, and in addition to the indoor bath, you can fully savor the beauty of the mountain ridges in the sky-open-air bath and the traditional Goemon bath, along with a historic famous hot spring said to be effective for muscle pain and more.
TypeNatural Hot Spring
A private reserved bath with 7 rooms in total on the 6th floor. In tasteful bathtubs made of hinoki or stone, you can enjoy the famous hot spring of Kowakudani to your heart's content without worrying about being seen. One of the rooms is designed with universal accessibility, allowing everyone to enjoy a comfortable and安心 private bath experience.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity9people
A full-fledged sauna room that makes generous use of hinoki cypress from Kanagawa Prefecture. The clean, soothing fragrance unique to fresh hinoki fills the room, and with every breath you can enjoy an excellent forest-bathing effect. Gentle yet powerfully warm, it softly leads you into a luxurious state of totonou.
Water QualityTap Water
Capacity2people
A cold plunge bath installed very close to the sauna room. With a refreshingly cold temperature setting that you can really feel, it quickly cools down a body well-heated by the hinoki sauna. After the bracing chill, a crisp sense of refreshment spreads through you, letting you experience an exquisite state of totonou amid the top-floor view and clear air.
Closed Days: None
1297 Ninotaira, Hakone Town, Ashigarashimo District, Kanagawa 250-0407, 1F
Gender Access
Gender Separated
Private baths are available.
The above applies to the communal (shared) baths. At facilities with private baths or private saunas, guests with tattoos may still be able to bathe. Please check with the facility for details.
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn moreAn observation open-air bath with the soothing scent of Kanagawa hinoki and sweeping views of the Hakone outer rim mountains
Kanagawa Hakone Town, Ashigarashimo District
"Hakone Hotel Kowakien" is a hot spring resort in Hakone Town, Ashigarashimo District, Kanagawa Prefecture, which had its grand opening in July 2023. From the "observation open-air bath with a view bath" on the top floor, you can take in a sweeping view of the lush Hakone outer rim mountains. The large public bath is equipped with an authentic dry sauna lavishly finished with local Kanagawa-grown hinoki cypress. You can enjoy an exquisite totonou experience surrounded by the rich aroma of hinoki. With a cold plunge bath, a charming Goemon open-air bath, private baths, and more, the facilities are highly varied, and overnight guests can use the adjacent Yunessun as much as they like for free.
TypeNatural Hot Spring
An open and spacious observation large public bath located on the top floor of the hotel, 6th floor, with a panoramic view of the lush Hakone outer rim mountains. It can be enjoyed on a rotating schedule, and in addition to the indoor bath, you can fully savor the beauty of the mountain ridges in the sky-open-air bath and the traditional Goemon bath, along with a historic famous hot spring said to be effective for muscle pain and more.
TypeNatural Hot Spring
A private reserved bath with 7 rooms in total on the 6th floor. In tasteful bathtubs made of hinoki or stone, you can enjoy the famous hot spring of Kowakudani to your heart's content without worrying about being seen. One of the rooms is designed with universal accessibility, allowing everyone to enjoy a comfortable and安心 private bath experience.
Sauna TypeDry Sauna
Stove TypeConvection Stove (Sauna Stone)
Capacity9people
A full-fledged sauna room that makes generous use of hinoki cypress from Kanagawa Prefecture. The clean, soothing fragrance unique to fresh hinoki fills the room, and with every breath you can enjoy an excellent forest-bathing effect. Gentle yet powerfully warm, it softly leads you into a luxurious state of totonou.
Water QualityTap Water
Capacity2people
A cold plunge bath installed very close to the sauna room. With a refreshingly cold temperature setting that you can really feel, it quickly cools down a body well-heated by the hinoki sauna. After the bracing chill, a crisp sense of refreshment spreads through you, letting you experience an exquisite state of totonou amid the top-floor view and clear air.
Closed Days: None
1297 Ninotaira, Hakone Town, Ashigarashimo District, Kanagawa 250-0407, 1F
Gender Access
Gender Separated
Private baths are available.
The above applies to the communal (shared) baths. At facilities with private baths or private saunas, guests with tattoos may still be able to bathe. Please check with the facility for details.
Curated by an expert who visits onsen and sauna facilities every day and has explored 300+ locations — only facilities confirmed to be truly exceptional are featured.
Learn more