Bought the twin size for my 2 year old boy. It was fairly easy to put together...maybe max of 30 mins. But the directions are a little confusing at first and I ended up putting the bottom side rails on wrong so I had to redo it and turn it around so the support boards would connect right. The support boards are curved and I'm not sure if they are supposed to be like that? It's a good piece of furniture for a short time. I don't see this holding up long term though.