I was able to put it together by myself in 2 hours. If I had help it would have been faster. The instructions says you are not to use power tools. I would still be putting it together today had I not used a drill. When using a drill, use it very carefully. It’s easy to strip the screws and bolts. I would recommend using screw driver and Allen wrench for final tightening to prevent this. Better quality hardware would have been helpful. 
It’s a bit wider than my mattress. 
That said, I really like the day bed and it’s sturdy.