I bought this sofa some 4 years ago on Joss and Main with the gel foam mattress option. It is very comfortable to sleep on, even if you do not extend the bed.
My only beef is that it can be hard to clean depend on what spills on it. I strongly recommend using a fabric protection spray you can usually find in your local supermarket's cleaning products aisle. This is not a good sofa to have if you have rambunctious young children.