Hotel front desk: the rooms are full during the eleventh period, and guests can't stay when they book to check out. How to explain this is easy for guests to accept?

Hotel industry principle, never drive guests out. So try to extend his hospital stay. As for overbooking, you can cancel the orders of late guests who have not paid the deposit. Because once such guests don't come, the later the room stays, the harder it is to sell. Of course, be sure to call the guests before canceling, so as not to make a trip in vain. The best way is to help him book a room with similar price nearby. It would be better this way.