Soak in a hot bath with natural salts flowing direct from the source
At adex inn, our large onsen bath is fed by hot sulphur water directly from the source spring, without any filtering. As a result, the water is cloudy and dense with suspended sulphur, providing a deeply soothing dose of natural bath salts. As the sulphur precipitates out, it settles on the bottom of the bath in onsen flowers, known as yunohana.
FREE 24-HOUR ACCESS TO
HOKKAIDO'S LARGEST ONSEN,
THE GRAND BATH IN TAKIMOTOKAN
Noboribetsu comes from the Ainu name, “Nupurupet”, meaning 'cloudy white river', and the healing powers of its hot springs have long been known to the Ainu people, leading to to establishment of Noboribetsu Onsen town over 160 years ago. Staying at adex inn includes our in-house onsen fed directly from a sulphate spring in Hell Valley, as well as free 24 hour access to The Grand Bath in Takimotokan, a value of ¥2,250. After check-out, you can enjoy a day in the onsen without charge.