How big should the hotel window be?

If there is no specific standard and the internal facilities are in place (fresh air), it is not necessary to open the window. Now the windows of ordinary hotels can't be opened. They are only used for lighting. Here are two window opening projects. One is ventilation. If there is fresh air in the HVAC system, it can meet the indoor sanitary conditions. The second is lighting. As long as there is sufficient indoor light (the standard window-to-ground ratio is 1/7), the windows here can not be opened. So what you should consider here is that your window looks beautiful from the inside and is convenient and comfortable to use.