Two things can be true at once: Sleeper sofas are a feat of engineering, and they can be the bane of your existence. It’s a marvel to fit a frame and mattress for a bulky piece of furniture ...

The floor-to-ceiling unit creates a new partition wall through the middle of the home. On one side is a red fold-out desk and on the other a bunk bed with a pull-out armchair slotted underneath.