Assembly was super easy/quick. Great quality. My daughter loves this climbing set, she’s 22 months old now just over 3ft tall and she can still plays on it! My older children have also climbed on it aswel. One negative thing is if I was trying to decide between the flat bars or the regular bars. I would just get that one piece with the regular bars as my daughter’s feet are abit wider so she has a harder time climbing that half otherwise it’s wonderful and would purchase again. We also switch and use the slide for a slide off our couch.