four stars. Wudu Hotel has reasonable layout and functional division, convenient and safe use of facilities, high-grade materials for interior and exterior decoration, exquisite workmanship, outstanding style, clear and practical indication signs, graphic symbols of public information conforming to GB/T11111.1 and GB/T11111.2, central air conditioning (except villa resort hotel), good ventilation in all areas, and a four-star computer management system. A hotel refers to a multi-storey building with restaurants, guest rooms, conference halls and other public places.