The space is somewhat fair. You do not indicate the distance from the floor to the window, but it is the appropriate place, if given by measurements, to place a trundle bed. There are more comfortable models than the traditional nest. These are beds that move with wheels but that go on a structure so that the bed, once opened, is not so attached to the floor and also, it is made better. Do not miss the next Extra Los Niños de, which will be published within a month, to inspire you in the environments and youth compositions. The dashed line marks where the second bed would arrive. If you can, place a row of drawers on the bed structure to multiply the storage capacity. In this way, the sensation of the tube in the distribution is broken, but if it is not possible, place the bed next to the closet. At the entrance, on the left, a closet with two bodies of 1.50 m wide and up to the ceiling. On the right, the desk, flown by the wall to save the radiator. There is room for two chairs, although opening the door would be more uncomfortable. Have you considered replacing the current door with a sliding design? And to take advantage of the space, we have projected storage modules on the walls, on the desk and next to the closet, at different heights and in different finishes.