小野川温泉 名湯の宿 吾妻荘

Azumaso is a traditional Japanese inn in Onogawa Onsen, Yonezawa, Yamagata Prefecture, welcoming guests since 1789. Set on a hillside overlooking the hot-spring town and surrounding mountains, it offers a calm retreat shaped by the changing seasons and the region’s hospitality.

The inn’s main attraction is its naturally flowing hot-spring water, enjoyed in a spacious public bath with garden views or in a reservable private bath. Guests can choose tatami rooms overlooking the Azuma mountain range or the town, as well as special rooms with private hot-spring baths. The separate Azumaen annex accommodates guests travelling with pets.

Dining showcases local and seasonal ingredients, including Yonezawa beef, a celebrated Japanese wagyu. Meal options range from sukiyaki and shabu-shabu to steak, alongside seasonal dishes and breakfast. Azumaso also offers an online shop and shares information about nearby Onogawa and Yonezawa, where visitors can explore nature, local food, history, and culture. Its warm, unpretentious setting is designed to help guests relax and recharge.