2.2 will be very suitable. Because there are two reasons for the placement of private rooms at this moment: 1. There are display discs on the table top of private rooms, which are generally 11-12 inches, and the area occupied by other tableware, if it is not beautiful, it will be crowded according to the original dining table of 1.8 or 2.1m. Of course, if it's a popular banquet, 1.8m will do. 2. According to the grade of private rooms, the dining chairs equipped with private rooms are slightly larger than popular banquets, which makes them look great and classy. According to the size of the chair, it is very suitable for the private room to be equipped with a dining table of 2.2m. 2.1m is slightly crowded. If there are 1-2 seats, it will be difficult for the waiter to even serve food!