First-time 'Shobu-yu' (Iris Bath) Event Using Ibaraki-Grown Irises for Children's Day! 'Ofuro Cafe Rinne no Yu,' Awarded No. 1 in East Japan, from May 4-6

"Ofuro Cafe Rinne no Yu" (hereinafter "Rinne no Yu"), a hot spring facility within THE BOTANICAL RESORT Rinne, which was awarded the No. 1 spot in East Japan*, will be holding a special "Shobu-yu" (Iris Bath) event using irises grown in Ibaraki Prefecture for a limited period from May 4th (Monday/Holiday) to May 6th (Wednesday/Holiday), 2026. In cooperation with local farmers, staff will harvest irises and float them in the baths, wishing for the good health of all visiting guests. *Awarded No. 1 in the New Openings category for East Japan in the "20th Nifty Onsen Annual Ranking 2025" announced on December 18, 2025.

Rinne no Yu's "Shobu-yu" Rinne no Yu is a hot spring facility located within a botanical garden. Because it is a place where people can enjoy plants, one of its charms is the ability to enjoy seasonal baths utilizing plants unique to Japan. Shobu-yu, popular during Children's Day (Tango no Sekku), has been handed down as a Japanese custom to ward off evil and pray for good health since ancient times. Irises are considered a medicinal herb that wards off evil spirits, and it is said that taking an iris bath helps one stay healthy through the hot summer.

Shobu-yu image, harvesting scene The irises used at Rinne no Yu for this event are from Ibaraki Prefecture. In cooperation with local farmers, staff visit the farms to harvest and carefully prepare the locally grown irises to be floated in the baths. Both day-trip visitors and overnight guests during the period are invited to enjoy Rinne no Yu's Shobu-yu.

Rinne no Yu "Shobu-yu" Details Event period: May 4th (Monday/Holiday) - May 6th (Wednesday/Holiday), 2026 Location: Ofuro Cafe Rinne no Yu, men's and women's indoor baths Address: 4369-1 To, Naka City, Ibaraki Prefecture, within THE BOTANICAL RESORT Rinne Business hours: 7:00 - 23:00 (Last reception 22:00) Parking: 725 spaces *45 spaces for overnight guests

Ofuro Cafe Rinne no Yu Details Rinne no Yu exterior Rinne no Yu is a hot spring facility within THE BOTANICAL RESORT Rinne, which opened in November 2025 after the renewal of the Ibaraki Prefectural Botanical Garden and Prefectural Citizens' Forest. It features separate large public baths for men and women, a sauna garden for families and couples, a book lounge and relaxation space, a cafe where guests can enjoy meals and sweets made with local ingredients, and a kids' room. Guests can relax all day in a healing space richly adorned with greenery, including tropical plants grown in the botanical garden.

・Price List (tax included) Usage time Adult (junior high school students and above) Child (elementary school students) Infant (3 years old and above)

120-minute use *Without lounge wear, towels Weekdays 950 yen Weekends/Holidays 1,100 yen Special Peak Days 1,200 yen Weekdays 550 yen Weekends/Holidays 700 yen Special Peak Days 800 yen Weekdays 450 yen Weekends/Holidays 550 yen Special Peak Days 600 yen

Free time use *With lounge wear, without towels Weekdays 1,200 yen Weekends/Holidays 1,400 yen Special Peak Days 1,500 yen Weekdays 700 yen Weekends/Holidays 900 yen Special Peak Days 1,000 yen Weekdays 600 yen Weekends/Holidays 700 yen Special Peak Days 750 yen

Rental items: Towel set 330 yen, lounge wear 330 yen, rental swimsuit 550 yen Sales items: Toothbrush 110 yen, razor 110 yen, comb 110 yen

*Children under 3 years old are admitted free of charge. *Golden Week period will be charged at special peak day prices. *Guests staying at THE BOTANICAL RESORT Rinne can use "Rinne no Yu" free of charge from check-in to check-out. (Accommodation reservations are accepted via web reservation.)

・Large Public Bath Enjoy 4 types of baths and saunas in an open-air bathing area surrounded by nature. The "Sodium-Sulfate Cold Spring (Hypotonic-Weakly Alkaline-Cold Spring)" transported from a hot spring in Ibaraki Prefecture is colorless and transparent, soft to the skin, and gently warms the body from the core. In the herb bath using herbs grown in the botanical garden, you can relax surrounded by botanical fragrances.

Indoor Open-Air Bath In addition, both men's and women's bathing areas have high-temperature dry saunas with auto-löyly, and the men's bathing area also has a medium-temperature, high-humidity sauna where you can enjoy self-löyly steam baths, inspired by a cave. Cool down your heated body in the cold water bath using well water pumped from underground, and experience "resetting" naturally in the clear air.

Cold Water Bath, Cave Sauna (men only)

・Sauna Garden This is a courtyard space with a shared sauna for men and women. The large sauna room, where you can enjoy in lounge wear, is equipped with a sauna stove from HARVIA, Finland. Heat wave performances and Aufguss events are held daily.

Aufguss Sauna Garden In addition, a "Fluffy Dome" trampoline is available in the center of the garden for children to enjoy.