Why is there a space outside the windowless window of the hotel?

Safety exit. Hotels without windows have poor ventilation, which is easy to breed bacteria, especially some towels in the bathroom, which are changed every day, because there are many bacteria overnight without windows, and the ventilation effect inside is poor. It is troublesome enough to get some fresh air and walk to the end of the hotel corridor. Generally speaking, the interior of the hotel and the room without windows are relatively small, so it is safe to have a space outside the window of the hotel without windows. In order to increase the income of the room, some corners will be turned into rooms without windows when building, which will occupy a small area and increase the income. In a room without windows, the lighting conditions are also very poor, because there are no windows, we can only get the light source by turning on the lights. In short, we all need to turn on the light except sleeping.