Offering a refined, modern take on Japan’s rich onsen culture, the resort’s two public onsen — one for women and the other for men, alternating daily — are as striking in their design as they are relaxing. Look out over beautiful Beppu Bay while soaking in the warm, healing myoban water of Beppu. Its minerals are said to cleanse and beautify skin. Also, take advantage of the dry sauna, a cold-water plunge pool, and a reclining bath.