Why is the check-in time at 2 pm and the check-out time at noon 12?

Because it takes at least 45 minutes for a star hotel to clean a room. So the hotel needs to set aside time to clean. However, under normal circumstances, as long as the room is not satisfied, guests will not be required to check in at 2 pm, or they can be required to check out late until 2 pm, and the hotel will not charge more, provided that the room is not full.

PS: I have worked in a five-star hotel for four years.