We waited a month before posting our comments to wait for our cats to adjust. 

It took about 45 minutes to put together. The instructions were easy to follow and easy to put together. It is also very sturdy, our cats are 15 lbs each and they climb all over it. It is bigger than we thought but our cats enjoy it. 

One improvement would be to use a heavier grade of carpet/covering. I hope this "Faux Fur" holds up over time.

Overall may Cats and I are very satisfied with this cat tree.