A couch bed is the perfect way to provide flexible sleeping space for guests, and modern sofa beds can be indistinguishable from regular couches. Shopping for a pull out sofa bed is not much different from shopping for a sofa: find the design you need that is the right size and uses the material you want. Couch beds come in a variety of sizes, from full-width sofa beds to twin, sofa beds, to even queen sized sofa beds. P.S. Sofa beds are also great for small living rooms! For more small living room design tips, check out our guide.