Firstly, I have a queen size bed and I put it together myself. I did have trouble screwing in the screws that hold the top posts together (as the holes were just too small) & they are just kind of sticking out where I couldn’t get them in all the way. I did try to take them apart and try again just in case I had misaligned them, but I still had the same issues. This is the major reason for the four stars. 

Despite this, the bottom of the bed is sturdy with both headboard and footboard going in the posts easily, and the frame that actually holds the bed being very sturdy as well. I dont find that the bed moves around much at all because of these reasons. I would buy it again, but I would suggest two people putting the bed together!