There is a gap with an 8" mattress on thr back with the headboard. Now I have to go get a 8"x10x1" board, staple black velvet to it and finish the headboard so you do touch the wall where the gap is on the mattress. I weigh 180 lbs, I did lay on it, it doesn't seem to budge much so that's a plus. Should work fine for my 13 yr old. Not happy about adding another project when I bought thinking it would be fully finished.