I am very glad I bought this cat tree. It has lasted through the years pretty well. The biggest thing is the pole to the top tower is still very strong, even with my large cat climbing and jumping to/from it. My cat has clawed the posts fairly well and they are showing some signs of use, but still holding together fine.
The rope ladder didn't hold together that well, but he never uses it. There was one end that has come out. Some strong glue will fix that though. The overhanging bed is about the largest sign of use and the fabric around the metal ring is starting to break apart. My cat uses that a lot, so I am not surprised. I have vacuumed it about once a week, which I think has helped maintain it, but you really should just to keep it clean.
The only big issue I have had is it being a bit top heavy. I have a larger cat, so when he is jumping around, mostly on the top perch, it wobbles. I have a counter weight at the bottom of about 30 pounds (a box of 21 old 80-pin SCSI hard drives in their carriers), which has resolved that issue. Without that though, it would be unstable for my larger cat.
Overall, I would recommend this tree. My cat has loved it and it has lasted well over the years.