I think putting the bed itself with the multiple poles was the most complicated part of assembly but overall my daughter loves it. She spends a lot of time at the desk then in the bed. Mattress is definitely not includedThe bed came out just as nice as the picture and my son loves it. It really helps with making more space out of his pretty small roomArrived faster than expected. Love the sleek look it has and great space saver for shared spaces. Was able to assemble on my own although I did purchase service!