I purchased this full sized day bed for my elderly father so he could have a nice place to sleep and have everything on the main floor.  It also provides extra seating when needed.  It helps ease my mind knowing that he hasnt fallen down the stairs.  He is an average sized person, so it supports him with no problem.  I added a good quality memory foam mattress (8 or 10-inch I think), and its so comfortable.  Be aware that there is a weight limit, cant remember exactly.  Read description.