Sky Spa

Sky Spa sits on the top floor of a Candeo Hotel in Matsuyama, a short walk from Dogo Onsen, and its main draw is the open-air bath with nothing blocking the skyline. The women's side looks out toward Matsuyama Castle, one of Japan's noted historic castles, while the men's side faces the city and catches the sunset — the view shifts from morning to night.

Each side also has an indoor bath built large enough to stretch out in, plus multiple shower stalls meant to cut down on waiting. The men's section has a dry sauna paired with a cold-plunge pool for the classic hot-cold cycle; the women's section has a lower-temperature steam sauna instead. Shampoo, conditioner and skincare amenities are supplied in-house, but bath towels are not provided at the spa itself — guests need to bring one from their hotel room.

Access is built around hotel guests, open from 15:00 to 11:00 the next morning, though the sauna closes between 2:00 and 6:00 and short cleaning breaks happen at 21:00–21:30 and 3:00–3:30. Children must be fully toilet-trained, and anyone seven or older bathes in the gender-specific sections. Day-pass access is listed in places, but given the official notes restricting day-trip bathing, it's worth confirming current visitor policy directly with the hotel before planning a stop-in visit.