It is the name of the water provided by our hotel. We have installed a water purification system in the entire building, so guests get to enjoy purified water throughout our hotel, including the water coming out of the faucets and showers in the unit baths and the toilet with bidet function in the guest rooms, as well as the water from the faucets in common areas and the water used for laundry. Experience water that is not only delicious but is also gentle on the skin with SOU-BI-SUI.