I really like this bed frame and I read the reviews… A lot of people were having problems with the mattress fitting, so I specifically looked at the dimensions of the frame and the mattress I ordered to go with it.. I ordered the mattress a bit smaller than the frame but the headboard takes up at least 2 to 3 inches of the actual frame.. in photo.. The mattress does hangover a few inches from the end of the bed frame, however when rounding the corner it does prevent you from hitting the frame with your foot..  The sides of the mattress fit perfect.. I really do like it! But I have to give it a 4 star..