My cats love it, they have been playing on this tree since my son put it together.  My only preference would be if the trays were a bit larger with a little deeper lip.  They are rather small for a larger sized cat, which I have 2 of, but my average sized kitty fits there just fine.  They use the sisal to scratch, not the fabric covering.  The toy strings got chewed through instantly, but the sisal loop provided to hang stuff from is great, you can change out toys whenever you want to.