Sofa Bed Buying Guide: Sleeper Sofas, Futons, and Convertible OptionsThe Indispensable Double-Agent: A Time-Honoured Homage to the Sofa BedWhen we consider domestic utility, few pieces of furniture command such universal respect and necessity as the humble, yet endlessly clever, Sofa Bed. It is the archetypal double-agent of the drawing-room, a mas