YUNESSUN is a hot spring theme park located in the famous sight-seeing area Hakone in Kanagawa Prefecture. There are unique baths such as the Coffee Bath, made from real coffee beans, and the Wine Bath. Also, at the collection of Japanese style open air baths in Mori no Yu, you can take your time and enjoy the hot springs. There is an official hotel nearby as well so if you get worn-out from enjoying yourself you can quick return to your room.