What does night room in a hotel mean?

Halo! It is to prepare the room in advance for guests who have made a reservation but have not yet arrived. There are many working procedures, such as: adjusting the lights to a suitable brightness and adjusting the water in the bathtub. The temperature, open the quilt at 90 degrees, just make the guests feel comfortable when they check in, it's humane. If it's a couple's room, there will be another rose, but it also depends on the hotel, some have , some don’t.