Had this tree for over 2 years. Still holding up and in great shape! Even with our 16 pound ‘kitten’ running up it at top speed any moment he can get, it has not lost any of its integrity and has not loosened or lost carpeting. I searched a long time to find a quality cat tree and I finally found it! My only wish would be to have the base fit flush in a corner. The top bed areas reach over a few inches so take that into account when measuring for your room, but this has not been a huge issue for us. 

Overall, both humans and cats are very happy.