Ten-yu
Hakone Kowakien Yunessun
-- ONSEN Amusement Park for All
Enjoy swimwear-friendly hot spring fun, delicious dining at spots like Kumashiro (sushi & shabu-shabu) and Yakiniku Zen, plus plenty of shopping. In July 2023, Yunessun unveiled a major renewal, featuring Hakone’s first lazy river.
Guests at Hotel Ten-yu can access Yunessun directly via a covered walkway—perfect even on rainy days.
All-Season Indoor Fun, Rain or Shine
With a dome painted like the Mediterranean sky, this indoor hot spring park is perfect in any weather. Heated pools make it enjoyable year-round, from summer through winter.
Aegean Sea of the Gods
Inspired by the Mediterranean, this spacious indoor spa offers a swim-friendly, all-weather experience. Enjoy gentle water sensations and an open, airy atmosphere that feels anything but indoors.
Bozappy's Yuyu Plaza
Come play with Bozappy! Located next to the Aegean Sea of the Gods, this area lets you meet Hakoneko Bozappy and friends. With a water depth of just 30cm, it’s perfect for little ones trying hot springs for the first time. (Water diapers and swimwear are available for purchase inside Yunessun.)
Lazy River & Kids Pool
Relax and chat while floating on an inner tube, or swim along the current in the Lazy River—there are many ways to enjoy the pool. The Pony Lagoon, a kids' pool with a depth of 30cm, also features a 1m slide and a watching area for parents.
Superb view open-air bath
Located in Yunessun's outdoor area, this 40m-long open-air bath offers panoramic views of the Hakone mountains. Enjoy a natural hot spring experience, and on clear days, you can also see Sagami Bay.
Relaxing Hot Springs at Mori no Yu
With stunning views of the Hakone outer rim mountains, an expansive garden outdoor bath, and a serene indoor bath,Mori no Yu is the perfect escape from the city’s hustle and bustle. Enjoy 8 different baths, including private baths, a sauna, and unique options like the relaxing sleeping bath and the soothing cypress bath (for women only).
Since 2021, guests at Hotel Ten-yu can enjoy this spectacular day-use hot spring for free
Outdoor Bath with Hakone Mountain Views
Relax in the garden outdoor bath with stunning views of the Hakone mountains. Both baths feature sleeping baths, Jacuzzis, and pavilions. At night, enjoy a different charm with lighting. The men's bath also has a waterfall bath, and the women's bath offers a collagen bath.
Indoor Bath for Year-Round Relaxation
Large windows create a sense of openness, allowing you to feel connected with nature. The central backrest, resembling a perch, lets you relax and enjoy conversations while gazing at the Hakone outer rim mountains.
Ceramic Bath Surrounded by Mountains and Greenery
Relax in the rustic warmth of the Shigaraki pottery bath, surrounded by the beauty of nature. Enjoy views of the Hakone outer rim mountains in the open-air bath, and at night, unwind under Hakone’s clear starry sky.
Private Bath (Additional Charge & Reservation Required)
Enjoy a special time with loved ones in a private bath. Perfect for families or groups, each room features an indoor bath, semi-open-air bath, and a dedicated post-bath relaxation area.
Yunessun & Mori no Yu: A World of Fun and Relaxation
Enjoy the swimwear-friendly Yunessun area, authentic hot springs at Mori no Yu, a variety of restaurants, and a shopping mall offering Hakone souvenirs—all in one exciting location.
Business Hours
>Click here for details.Frequently Asked Questions about Yunessun
>Click here for more information.Official Yunessun Website
>Click here to visit.
