Nasu-Onsen Shinshun no Kago Hewitt Resort

The Nasu Highlands’ hot springs and hiking trails have attracted Japanese travelers for centuries. Thanks to high-speed bullet trains, the region is now an easy weekend getaway from the capital, with ultra-modern spa hotels like Nasu-Onsen Shinshun no Kago Hewitt Resort maintaining the high standards to which Tokyoites are accustomed.

With a minimalist design and soaring glass windows, this ryokan-style resort blends into the surrounding forest. Each room is a sleek sanctuary with high ceilings, cedar paneling, bespoke Ploh bedding, a writing desk, and a private onsen that’s partly open to the elements; a few also feature private saunas. Stylish communal spaces include a fireplace-warmed living room and a library with a collection of art books and Karuizawa whiskies, all with peaceful views of the surrounding woods.