Youth is a general concept and therefore while designing a room for a young person we should take into account the age as well as the question whether the room is to ”grow” together with its inhabitant or we are planning to change the interior to adjust it to the needs of the growing owner. Both options have their pluses and minuses. If you like changes my suggestion is to assume that the room should change. If you don’t, think about what you need now and what you might add in the future. Please see a few possible solutions below.