The best sleeper sofas are versatile ... Our top pick overall is the West Elm Shelter Queen Sofa, a highly customizable couch with a memory foam mattress that impressed us during testing.

A sleeper-sofa mattress upgrade: Milliard 4.5-inch Memory Foam Replacement Mattress It doesn’t take much to improve upon the busted, old mattress—or the disappointing new one—lurking in your ...