Ok so these beds are beautiful. Much better quality than I expected and the fact that they can be separated was a huge sell for me. That being said, there are a million pieces lol!  It took me about 8 hours from start to finish. My advice would be to make sure you have an open space to build. And when installing the slats make sure you pull them tight so the holes match up. Everything else was pretty straightforward but like I said there were a lot of pieces. The finish is beautiful and it holds up well to our kids. Also, we added some additional brackets to where the bunks connect because they do shift a little. Otherwise they are perfect!