What is the room area requirement of a four-star hotel?

Four-star hotels need central air conditioning (except villa resort hotels); Music system with background; /kloc-provide foreign currency exchange service for 0/8 hours; At least 40 rooms (sets) are available for rent; 70% guest room area (excluding bathroom) is not less than 20 square meters; Providing Internet access services; The bathroom has a telephone and a hair dryer; There is a mini-bar in the guest room; Dining room tableware is configured in complete sets according to Chinese and western habits, without damage; There are a large number of high-quality passenger elevators in buildings above 3 floors, and the cars are elegantly decorated; Purchase tickets for transportation, movies, visits, etc. Provide sightseeing services in the city; Services can be provided in Mandarin and English, and services can be provided in a second foreign language if necessary. Four stars are divided into four stars and four stars.