This is an OK cat condo.  It took me about an hour to assemble it, which wasn't too bad. The second to top perch shouldn't be part of the design.  It more or less blocks the top perch, and it's wobbly.  I took it off and it was a huge improvement.  My cat ignored this condo completely for 2 months.  Then I moved it in front of a window, and she chills on the top perch every day now.