We bought this a week ago and just set it up. My husband did it in 10 hours or so. The instructions were good for the most part- except where the screw names were off. One thing that made it easy to identify the mislabeled screws is that the screws are organized based on sections being built. So even if they are mislabeled, the image usually matches screws found in the same sections. Couple of holes needed predrilling. But overall not bad as we saved quiet a bit on installation fees and were able to do it ourselves. The only part you need some muscle is the installation of the circular roof. I took out one star for the instructions but other than that is a good product and kids love it. Time will say how well the last.