When buying a bedroom set, most of us look at the color and model first, while size takes a backseat. Then the bed doesn't fit the room, the mattress wobbles in the frame, and the bedside table door hits the wall. In this article, we explain the 9 mistakes that lead to such situations, how to avoid them, and what experts look at in simple terms. Size mistake when buying a bedroom set What is a size mistake when buying a bedroom set and why is it made? People look at a "160-size bed" product and think the whole set will fit in the room. However, 160 is not just the width of the mattress, the outer dimensions of the bed are always larger than that. The frame, side panels, and headboard take up extra space. What is the result? Suppose your room is 3 meters wide, and you place a 160 cm bed against one of the side walls, putting a bedside table on the other side. There is no passage left for a person between the bed frame, the bedside table, and the wall. The bedroom turns into a cramped storage room. The right way First choose the mattress size, then get the outer dimensions (width, length, headboard height) from the model's technical page. Outline the bed contour on the floor with paper tape. This shows it more clearly than a number on paper. Leave about 60 cm of clearance on the side of the bed for passage. It should be at least 50 cm. Also look at the length; if you plan a bench or dresser at the foot end, allocate space for it. Most common mattress sizes are as follows…