Hotel WHY operates as Japan's first zero-waste accommodation, where guests actively participate in the town's environmental mission. During your stay, you'll learn about Kamikatsu's 45-category waste sorting system through hands-on activities, attend daily educational sessions at 4:30pm, and use shared eco-friendly amenities from the onsite store. The hotel was built on a former landfill site and serves as both accommodation and educational facility, making sustainability the core of your experience rather than just a feature.