What is the standard room area of a hotel room?

The international standard for luxury business rooms is not less than 25 square meters. At present, the big bed room can reach 35 square meters, which is already very spacious. A little bigger, it will soon become a suite. There is no fixed standard for the division of rooms, because it is not a suite, so it is impossible to partition, and many functions may cross together, but the office area and reception area (bar) of a business room must have a certain space.