this bed is NOT GOOD for a Purple mattress (note that none of the reviews said this and said no box spring is required) and the 4 slats provided are not nearly enough to support the mattress. every time we sit down the support beams creak and the only thing holding the bed from the ground are a few weak support slats that have already turned sideways several times and we have to move the mattress to adjust them. this bed is aesthetically nice but is not comfortablesturdy or worth the price tag. 
my husband was sitting on the bed (not even moving) and one of the slats snapped.