What is the grade of Ctrip's four diamonds?

According to Ctrip. Ctrip Four Diamonds is a standard for rating hotels. It was not released by the national management department, but was based on Ctrip users' evaluation of the hotel and other factors. Ctrip Four Diamond Hotel is equivalent to a four-star standard. The rooms are usually beautifully designed, luxuriously decorated and elegantly arranged. Some hotels can also provide comprehensive business services and advanced conference facilities. These hotels have complete facilities, good quality of daily necessities and strong service and reception capacity.