I fear I won't be brief, I am too impressed.
They shipped the item FedEx, so it came to my apartment door rather than being left in the lobby. Awesome.
The quality is excellent. The fabric is rich, thick and very soft, not cheap carpeting. I was actually impressed. It has a sheen that makes it even look good. The parts that are wrapped to encourage climbing or clawing are well glued and uniform. The wood used to construct everything is sturdy and solid, not fortified cardboard, (except the two pieces on the side of the little house, but they aren't meant to bear weight.)
Once together, the kitten climbed it immediately. THIS THING IS STURDY. My five year-old couldn't knock it down, (not a guarantee nor recommendation), and she climbed on it.
Finally, I don't want to give this Cat Tree all of this credit, but my old cat has wished nothing but trauma for the new kitten until this went up. They played together for the first time once they were both on it.
My only suggestion would be to include some assembly instructions with the diagram for people who aren't visual. But the diagram was enough for my husband to easily put it together.