Our kittens enjoy climbing the tree, and we enjoy having a spot to put their food where our resident old man can't steal it.
I had some issues mounting it, which were mainly user error - issues with screws stripping as another review mentioned (mostly fixed by drilling deeper pilot holes), and difficulties getting the mounts level (they seem to sag a bit at the end not attached to the wall).
Mounting difficulties aside, the fully assembled cat tree is sturdy, the cats seem to enjoy it, and we enjoy seeing them clambering around - I am already conspiring to add more wall-mounted cat furniture to other rooms.