It is a public inn in Shiramizu Onsen, Minami-Aso Village, at the southern end of the Aso Mountain Road, where a bath stop can be used. The hot springs are abundant at a spring temperature of 56 °C. There are Iwazumi Kozumi no oyu with the image of a curve, and kamboshi no oyu with the image of a straight line, and there is an open-air bath and a sauna (open-air bath is not available during the winter period). Swap men and women on a weekly basis. The three family baths (chartered baths), such as fire-no-yu and haze-no-yu, are large, and among them, wind-no-yu is well received because it is barrier-free.

A huge hot spring facility adjacent to Arden Hotel Aso. On a site of 1000 tsubo, 10 men and women, all of them are flooded with hot water from the source. The open-air bath is filled with lava and trees of Aso, and can be refreshed with a full-scale structure that makes you feel nature on the skin. Guests of Arden Hotel Aso can use it free of charge. There is also a restaurant where you can enjoy yakiniku.

Within the Aso Kuju National Park, a "health promotion park" surrounded by majestic nature. In addition to "Genki no Mori" where you can enjoy full-body exercise with more than 70 kinds of exercise attractions, "Fureting Animal Kingdom" where you can experience the feeding of most animals in the park, the experience that adult children can enjoy, such as "Handmade Experience Hall", where the craft experience that can make memories into a form is popular, is attractive. In addition, there are many shopping stores, such as an observation restaurant where you can taste delicious ingredients from the agricultural kingdom, Kumamoto, and “Aso Milk Farm”, which has a sweets factory inside the store.