The bed came in large sections. What we had to assemble was easy. We were missing some of the screws and such to attach the bookshelves to the bed but it was easy to get replacements sent to us.
A couple things that were a little disappointing. The backing to the shelves werent lined up right which made it so it is not securely attached to the frame of the shelves. Also the main board that goes down the middle to hold the mattress up had a huge knot right in the center. It split after a few days. Our 13 year old son is not a big kid, he is small for his age so I wouldnt blame it on too much weight. Some of the drawers dont close all the way either, there is a small gap which doesnt affect the function. Just astheically not ideal.