"Hakodate Yunokawa Onsen Umi to Akari / Hewitt Resort" is a hot spring resort hotel in Hakodate, Hokkaido. On the rooftop, the sky-high open-air bath, "Ancient Infinite Sea Lantern Open-Air Bath," offers an infinity-style spectacular view framed by the Tsugaru Strait stretching out before you, Mount Hakodate, and at night, the moon shimmering on the sea and the fantastical lights of fishing boats. The large public bath features a rare tatami-style bath floor in Japan, making it safe for everyone from children to older guests. You can also enjoy uniquely refined bathing experiences here, such as "tsukimi-zake," savoring carefully selected local sake.