UUSIN by NEXT SAUNA is a private sauna in the basement of the Royal Pines Hotel Urawa, seven minutes from Urawa Station's west exit. Its rooms each hold a Finnish sauna that can be set to 90, 100 or 110°C with aroma self-löyly; Standard and VIP rooms add a bathtub that can be filled cold or warm. Rooms are booked by time, from 4,400 yen for 70 minutes in the Economy room. Open 6:00–25:00.