Bunk Beds For Adults First, You must decide the size of the bunk bed you'd like to purchase for adults. A bed with a L shape is ideal for kids who aren't particularly tall. Make sure that the bed has solid slats. Stability and accessibility are important aspects of slats. https://www.ferncooper.uk/furniture/sleeping-in-sync-the-ultimate-guide-to-bunk-bed-for-maximum-space-and-comfort/