Traditional sofa beds, where you have to remove all the cushions and unfold the bed, are a pain and not very comfortable. But for smaller spaces and studios, transformers can save a lot of space and serve multiple functions.
Thomas Althaus has designed a sofa bed with a twist- you rotate one of the arms of the L and connect it up with the other to make a double. It might be a bit big and jazzy for a LifeEdited, but is an interesting idea.
The sofa in transit...
The sofa as double bed. An interesting twist by Thomas Althaus for the Die Collection, found on Freshome
More Transformer Beds In TreeHugger:
Hey, You've Got to Hide Your Bed Away
Another Way To Hide The Bed: Put It In A Box
Living with Less: First, Hide the Bed
7 Ways to Get Rid of the Bed
10 More Ways To Get Rid Of The Bed