Open year-round, though a few maintenance closures happen each year on dates announced separately. Last entry is 23:30, even though the baths themselves stay open until midnight.
General admission is 980 yen on weekdays and 1,150 yen on weekends and holidays (members pay 880 / 1,050 yen). The weekend and holiday morning session (7:00 to 9:00) is discounted to 1,050 yen general / 950 yen members. Kids are 300 yen, and a rental towel set is 350 yen.
Heated tap water, not a natural hot spring
The site itself describes the baths as artificial (jinko) onsen reproducing famous springs' mineral profiles, and the carbonated bath is likewise 人工炭酸泉 (artificial). Confirmed by two independent Google reviews stating it is not a natural hot spring.
Open-air outdoor bath
Enclosed indoor bathing area
Dry heat sauna room
Cold water plunge bath, typically used after sauna
Shared bathing area for all genders
Allows entry with visible tattoos
Tattoos/irezumi must be fully covered with a purchased cover sticker (postcard-size, ¥300); cutting the sticker into pieces is not permitted.
Welcomes children and families
Elementary-school-age and younger must be accompanied by a guardian 18+; junior-high students and older may enter alone until 22:00.
Restaurant or dining open to visitors (not just hotel meal plans)
Shower, wash stations, soap and shampoo provided
Towels available to rent or borrow
Rental towel set ¥350; the site separately notes towels are also sold, not only rented (「タオルはレンタルのみでなく、販売も行っております。」) - rental itself is confirmed available, so kept YES.
Relaxation space for after bathing
On-site or nearby parking available
Mountains
Electric Bath
Jet BathYukaraku is a day-use bath and sauna complex in Hadano, with seven different tubs to work through: a carbonated soak, jet and electric baths, a charcoal-filtered cold bath, two cold plunges at different temperatures, a one-person jar bath (tsuboyu, 壷湯), and an open-air bath styled after famous hot springs from around the country. The water throughout is artificial, formulated to mimic the mineral character of those springs rather than drawn from a natural source, so it's more about variety than pedigree. Sauna culture is the bigger draw here: a hot tower sauna with hourly loyly service and regular aufguss sessions, a quiet meditation hut tucked into the outdoor bathing area, and a separate two-floor clothed sauna zone called Totonoi with an amethyst room, a low-temperature loess sauna (kodo, 黄土), a self-service loyly room, and a cool-down room, plus semi-private booths and a large manga library to hole up in between rounds. There's a restaurant too, and the outdoor baths look out toward the Hadano mountains.
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Anastasia
Today I visited Yukaraku onsen. A very fun place: the rotenburo is basically an open-air cinema, there's a TV right above the bath and in front of the bath there are chairs in three rows like an auditorium. On the side there's also a wooden stand like a tribunal for meetings. Very atmospheric. I went with a friend, so it was great - lots of space for relaxed chatting.
Last updated July 29, 2026