Right Onsen › Kanagawa › Hakone
Hakone Kowakien Yunessun
3.8★ · 5282 Google ratings · Hakone, Kanagawa · 箱根小涌園ユネッサン
Before you go
Can you bathe here?
Day visitors
✓ YesListed as a day-use onsen: a bath for day visitors by definition. No visitor review states otherwise.from the facility's listing category
Hours
Not published in the listing · check the official siteno opening hours in the Google listing
Tattoos
Cover requiredstated on the facility's website · read 2026-09
Reservation
✓ YesEntry is managed by a reservation system with a set entry time, though online pre-booking can help skip queues.stated by 2 visitors · Aug 2026
Watch out
Restaurant
Multiple food courts and restaurants exist inside, but visitors reported long lines and limited seating during peak hours in 2026.
stated by 3 visitors · Aug 2026Hair dryer
Hair dryers are provided, though visitors reported queuing up to 10 minutes to use them during busy periods.
stated by 2 visitors · Aug 2026The bath
What you’ll find
Yunessun is a large hot-spring theme water park in Hakone combining swimming pools and bathing areas, popular with families but reviewers repeatedly warn of extreme crowding in summer, mixed cleanliness, and costly parking.
Rest area
✓ YesA rest area is available and was noted as the cleanest part of the facility.stated by 1 visitor · Aug 2026
Restaurant
✓ YesMultiple food courts and restaurants exist inside, but visitors reported long lines and limited seating during peak hours in 2026.stated by 3 visitors · Aug 2026
Practical
What to bring
Payment
✓ Cards & QR acceptedCash and PayPay (QR payment) are accepted; the old wristband tab system was discontinued in favor of cash/QR checkout as of 2026.stated by 3 visitors · Aug 2026
Hair dryer
✓ YesHair dryers are provided, though visitors reported queuing up to 10 minutes to use them during busy periods.stated by 2 visitors · Aug 2026
Timing
When to go
Quietest Thursday around 10:00; busiest Saturday around 14:00. Measured by Google over past visits, not a forecast.
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Quiet Busy
Practical
Plan your visit
📍 1297 Ninotaira, Hakone, Ashigarashimo District, Kanagawa 250-0407, Japan
🚃 Kowakidani station, 0.7 km
📞 +81460-82-4126
📋 Show at the counter: 箱根小涌園ユネッサン
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