Karta Vacation Rentals
Tucked into leafy Karuizawa, Koya Backpackers is a snug hostel just steps from Kirizumi Onsen and Arafune Cold Storage. A short drive puts you at Hoshino Onsen and Karuizawa Prince Shopping Plaza, with museums and parks nearby like the Sezon Museum of Modern Art and Joshin'etsu-kogen National Park.