This was VERY easy to assemble… once we took a deep breath and just looked at the instructions for a few minutes before we jumped in. It looked pretty intimidating at first. HahaIt took two of us two hours to assemble. I was the brains and he was the brawn. I studied the instruction photos (it’s all photos) and laid the pieces out and he pushed them in. It was actually kinda fun! Just time consuming.I think it’s pretty stable and will last a few seasons. The zipper is really heavy duty on the door. I wish it had Velcro or magnets as well so we didn’t have to always zip and unzip it. I might add some Velcro tabs.We set it up over a Saluspa hot tub. It’s 6’ round and 24” tall and it works great. There is about 3’ of space all around it. We thought we wanted it that way but ended up pulling it forward so the hot tub is not centered but more towards the back. That gives us like 5’ of space when you walk in the door and it’s enough for a chair and little table with room to undress. It’s been in the 40s at night and I didn’t want to use the hot tub anymore because I didn’t want to get out and run to the house. lol this keeps it in the mid 60s inside and when we take the top off the tub, it gets into the mid 70s!!! I love it! It will certainly save electricity keeping the hot tub warm! Don’t think you’ll be star gazing through it though… you won’t be. It dogs up immediately when you take the top off the hot tub. Humidity gets super high.My hubby is 6’1” and while he has to duck in the door he can stand inside just fine.We love that it comes with the screen cover too! The whole thing comes in a nice storage bag too like a pop up canopy. We have no intention of taking this down though, so we have a nice huge bag for something else now I guess. lol