Hakone Yunessun Guide: Baths, Tickets, and Tattoo Rules (2026)

Yunessun Area: The Swimsuit Theme Park

The Yunessun side is the reason most visitors come: a cluster of novelty baths plus a heated water slide, all bathed in swimsuits rather than nude. Coffee and wine baths lean into a sensory pitch, brewed and poured in Nel Drip style, while Rodeo Mountain and the indoor domed pool keep the visit moving even in bad weather. Yunessun works best for families with children, couples who want to stay in the water together, and travelers who would rather skip traditional nude bathing.

• Coffee Bath: a low-heat, Nel Drip-style brewed coffee bath, marketed for its aroma and a skin-beautifying effect.
• Wine Bath: a grape-colored bath tied to old rejuvenation-bath lore, also marketed for skin benefits.
• Rodeo Mountain: heated water slides that run through winter, a regular feature in Japanese TV and magazine coverage.
• Indoor domed pool area: a Mediterranean-themed space that keeps the visit going on rainy or snowy days.
• Flowing Pool: added in July 2023, the first major renovation since Yunessun opened.

Mori no Yu: The Traditional Naked-Bathing Onsen

Mori no Yu sits on the quieter side of the property, with no swimsuits and a slower pace than Yunessun. The open-air bath runs 40 meters, with views of the Hakone mountains and the outer crater. A Japanese-garden layout connects separate baths for men and women, plus laying baths, a jacuzzi, and a gazebo, so you can move between them at your own pace. The open-air bath is scenic across seasons: autumn brings foliage color on the surrounding mountains, and winter wraps them in visible steam. Mori no Yu suits travelers who want a quieter, traditional Japanese onsen with mountain views, without the theme-park pace of Yunessun next door.

• Indoor bath: large windows keep the mountain view even on rainy or snowy days.
• Ceramic bath: Shigaraki-ware pottery tubs, good for stargazing after dark.
• Private bath: ¥7,000–¥11,000 per room, with the price and duration depending on the room and time slot.

Hakone Yunessun Tickets and Hours in 2026

Ticket pricing depends on the date and which side of the property you want to visit. Yunessun uses A, B, and C price calendars, with weekends and peak periods generally costing more. Check the official price calendar for the exact category before buying.

• Yunessun (swimsuit area) hours: weekdays 10:00-18:00, weekends and holidays 9:00-19:00.
• Mori no Yu (naked-bathing area) hours: 11:00-20:00 daily.
• Hours may run later depending on the season.

Getting to Yunessun from Odawara and Hakone-Yumoto

Yunessun is a major stop on the Hakone Loop route, so most travelers fold it into a wider day of sightseeing rather than a standalone trip. All routes use the same bus line, headed toward Hakone-machi/Owakudani, so check the destination board before boarding.

• From Odawara Station: bus toward Hakone-machi/Owakudani, about 40 minutes, alight at the Kowakien stop.
• From Hakone-Yumoto Station: the same bus line, about 20 minutes to Kowakien.
• From Kowakudani Station: about 2 minutes to the Kowakien stop.
• By car: about 30 minutes from the Hakone-guchi exit of the Odawara-Atsugi Expressway/Seisho Bypass.

Stay at Hakone Kowakien Hotel or Day-Trip?

Hakone Kowakien Hotel is about a 3-minute walk from Yunessun, across a crosswalk. Guests get unlimited access to both Yunessun and Mori no Yu during their stay, including before check-in and after check-out. Entry uses a QR-code pass issued at the 4F front desk. Yunessun uses the 4F gate; Mori no Yu uses the 3F or 4F gate. Day-trippers can also reserve a private bath, currently priced from ¥7,000 to ¥11,000 per room depending on the room and time slot.

• Free rental for hotel guests: one set per guest of bath towel, face towel, and swimsuit; extra sets are charged per day.
• Parking after check-out: ¥1,300 on weekdays, ¥1,600 on weekends, holidays, and peak season, for stays of 2 hours or more.

Tattoo Policy, Payment, and Practical Tips

In the Yunessun swimsuit area, tattoos must be fully covered by a rash guard, swimwear, or cover tape. Since October 1, 2025, Mori no Yu also admits guests whose tattoos can be completely covered by no more than two designated paid cover seals. Larger tattoos require another option, such as a suitable private bath. Review the official Mori no Yu tattoo notice before visiting. Payment inside Yunessun is cashless and is settled when you leave. The indoor areas make the complex practical during rain or snow, including on a winter trip to Hakone.

• Bath towel rental: ¥250.
• Face towel rental: ¥150.
• Swimsuit rental at Shop & Rental ukiuki: men's ¥1,200, women's from ¥1,200, and children's from ¥700.

Visiting Hakone Yunessun With Kids

The swimsuit-required Yunessun area is built for family bathing, letting kids and parents share the water in a way most Japanese onsen do not allow. Rodeo Mountain's heated slides run year-round, including winter. Children's admission ranges from ¥1,800 to ¥2,000 for the combined pass, ¥1,400 to ¥1,700 for Yunessun, and ¥1,000 to ¥1,200 for Mori no Yu. Children's swimsuit rental starts at ¥700. Hotel guests traveling with kids get one free rental set each and can use the property before check-in.

Fitting Hakone Yunessun Into Your Hakone Itinerary

Most travelers pair Yunessun with a ride on the Hakone Ropeway earlier in the day, or a Lake Ashi pirate ship crossing afterward, often folding it into the same loop as an afternoon or evening stop. If you are still deciding where to base yourself for the wider trip, the Hakone versus Kawaguchiko comparison covers the trade-offs. Because both bathing areas are indoors or weatherproofed, Yunessun works as a rain-day backup as well as a planned stop on a clear one.