The room number of a hotel generally consists of the number of floors and rooms. There are many floors in high-end hotels, so they are often represented by two digits, and the number of rooms is also represented by two digits, so that four digits can clearly represent the room number.

Volatility is the instability of hotel business activities. Hotel management is restricted by many factors, the most basic objective factor is social and political factors, that is, national policies, social order, diplomatic relations and so on.

Services:

In essence, the hotel's business activities are not to produce and sell tangible material products, but to provide an intangible service to the guests with material facilities, and the guests finally get only the utility of a service and the experience of a service process.

Comprehensiveness refers to the complexity of the elements of hotel business activities and the closeness of internal and external relations. In modern society, staying in a hotel is not only a basic need of life, but also a way to pursue enjoyment. To meet the needs of guests, the hotel must have complete functions, complete facilities, rich projects and excellent service. Therefore, this requires the coordination of hotels and the establishment of a comprehensive service system.