The first secret to keep in mind when dealing with the theme of bedroom furniture is to always start from the wall that will be the head of the bed, as long as you don't want to put a bed in the middle of the room.
If the size of the bedroom is generous enough, the presence of a bathroom in the room will make the environment truly unique.
The most used trick to getting more space out of a small room is to create the illusion of a large space. Discounted but not to be underestimated, the mirror is the first element that must not be missing in a small room. It reflects light, spaces and creates interesting contrasts.