This is a great and sturdy gazebo!
It is extremely well-made, and they have thought of almost everything… even including a bag of extra hardware in case it’s needed, and extra load-supports you can add for winter. I have also bought a winter cover made specifically for this gazebo, on another site, which will turn it into a great place to store the patio furniture over the winter.
The pieces fit together well, although the roof panels are a bit tricky. After reading advice on another site, we found that leaving all the nuts and bolts loose everywhere until the very end really helped to make things easier to fit. Also, we left the very top cap off until it was time to finish the final side of roof panels, and even then, left the screws really loose, as otherwise getting the roof panels on would have been really difficult. (My husband lay across the corner of the roof from a ladder at the end, to tighten the final bolts.)
We had a golf cart that we parked in the middle, which helped a lot, by having someone standing at a height to assist from the inside.
There were three of us (really need that third person for certain parts), reasonably handy, and it took approximately two hours for the frame and another four hours for the roof panels and final bits and pieces. We are in our early sixties and were tired at the end.

The only issue I have at this time is that there are spaces between the frame and the edge of the roof panels where I can see that mosquitoes could come through. It does not seem that they have thought about this, so I think I will buy the foam tubes used to insulate water pipes, cut them in half, and try to wedge them into that space.
Would I buy it again Yup! Good product.
** Important note The size advertised is measured from the outer edge of the roof, and the overhang is about 6 inches all the way round. Also the corner poles are inside of that, so you are losing about a foot and a half of usable space in either direction, especially when the screens are closed. The height at the edge is not overly high, and my taller friend had to duck a bit as he entered.