Thermae-Yu Holdings Co., Ltd. operates hot spring facilities as well as real estate and other businesses in Japan. It sells, buys, and rents buildings and residential real estate, and provides hot spring bathing, food and beverage, and massage services. The company was formerly known as Econach Holdings Co., Ltd. and changed its name to Thermae-Yu Holdings Co., Ltd. in October 2025. Incorporated in 1926, it is headquartered in Tokyo, Japan.