I forgot to tell you. If there is a window next to the bed, then consider the radiator and the curtain, you also need to pass by them. If the size of the room is very small, but you need a normal large bed, then you can use other heating systems, for example, a warm water skirting board instead of radiators, and, for example, infrared electric ceiling panels. And do not use classic curtains, for example, use blinds in the window opening or on the window frames themselves. This should be incorporated into the final design of the room so that it is convenient to use.