On September 19, 2026, Mercure Nagano Matsushiro Resort & Spa—located in a region where the rich nature of Shinshu intersects with the history and culture of the Matsushiro castle town—was officially awarded the international environmental certification, "Green Key."
The hotel received high praise for its dedication to sustainable operations, aiming to reduce environmental impact and foster coexistence with the local community, all while delivering an all-inclusive guest experience featuring Northern Alps views, fine Matsushiro hot spring baths, and locally sourced cuisine.
Congratulations to Mercure Nagano Matsushiro Resort & Spa on earning Green Key certification and continuing to advance sustainable hotel management in harmony with the local community!










