It got 4 stars because of the instructions. They were difficult to follow to say the least. First of all, this is a two person job. Secondly, you need to just think about what the end product is and use some common sense. The bolts arent labeled so we just sorted and counted to see which ones were which. Also one of the bolts at the top headboard piece wouldnt line up well, so it wouldnt screw in completely. It got 4 stars because the end product was definitely worth the struggle. Absolutely love it. Beds with this foundation system are so comfortable. I already had one with this type of foundation , this one was for my daughter. Love, love, love it.