Aso Hotel

Spring water drawn directly from the source The Aso Hotel onsen draws spring water directly from the source. The spring water has a temperature of 43–45 degrees Celsius, which is ideal for bathing. Fresh spring water is pumped directly into the bathtubs, with no heating and no other water added, so you can enjoy a soak in a pure natural spa, the blessing of Aso’s nature and land.

Splendid view of the five peaks of Mount Aso From the outdoor bath and large indoor bath guests can view a splendid panorama of Aso in all its glory. They are very popular baths, with many guests happily commenting that they had been greatly soothed by this majestic view of Aso.

100% pure hot-spring water drawn directly from the source! The natural spring water is drawn directly from the source, with absolutely no circulation, no heating, and no other water added.

Ichibankan Onsen Information Large bathrooms with panoramic outdoor baths: One each for men and women (Ichibankan 8F)
Bathing times:
AM: 05:30–09:00
PM: 15:00–23:00
Name of hot spring: Aso Uchinomaki Onsen
Type: Direct from source (no added water, heating, or circulation)
Spring water content: Sodium, magnesium, calcium, sulfate (hypertonic, neutral, high-temperature spring water)
Spring water temperature: 43.0 degrees Celsius

Brimming with ever-flowing spring water The Nibankan has two large bathrooms with outdoor baths, one for men and one for women. Both the indoor bath and outdoor bath are filled with spring water drawn directly from the source. Please soak in the onsen to your heart’s content during your stay!

Genuine onsen loved by people for ages For ages people have loved the fresh spring water at this onsen and called it their “personal spa.” The natural spring water is drawn directly from the source, with absolutely no circulation, no heating, and no other water added.

Nibankan Onsen Information Large bathrooms with outdoor baths: One each for men and women (Nibankan 1F)
Drinkable spring water (Nibankan 1F courtyard)
Footbath (Nibankan 1F courtyard)
Bathing times:
AM: 05:30–09:00
PM: 15:00–23:00
Name of hot spring: Aso Uchinomaki Onsen
Type: Direct from source (no added water, heating, or circulation)
Spring water content: Sodium, magnesium, calcium, sulfate (hypertonic, weak alkaline, high-temperature spring water)
Spring water temperature: 45.0 degrees Celsius

Being able to drink spring water at a hotel is highly unusual! The public health center has granted permission for this spring water, drawn directly from the source, to be drunk. There is a drinking place and footbath in the Nibankan courtyard. You’re very welcome to drop by!

Certified by the public health center as safe to drink The public health center has certified the Aso Hotel’s spring water as safe to drink. The drinking place and footbath are located at the Nibankan’s entrance. You’re very welcome to drop by!