Gensen Itto is a hot-spring hotel brand created around the distinctive power of each destination’s natural spring. Its first properties are scheduled to open in summer 2026 in Minamiizu, Shizuoka, and Shizukuishi, Iwate. The brand focuses on the character of local waters, including their mineral qualities, volume and benefits, and aims to help guests experience each spring in ways shaped by the surrounding landscape, history and culture.

The stays combine bathing, dining and restorative hospitality. Guests can enjoy large public baths and open-air baths, while meals feature seasonal ingredients prepared using spring-water-inspired techniques, alongside local sake and tea. Welcome services and amenities incorporating hot-spring water extend the experience throughout the visit. The brand also highlights activities that invite guests to engage with the springs, such as making hot-spring eggs or mineral deposits.

Gensen Itto describes its approach through five elements: spring quality, bathing experiences, cuisine, warm welcomes and spring-based activities.