Update:  Jan. 2023 Only had this since Sept. and the tallest post has now broken in half. I'm definitely not happy about that. Changing to 3 stars. 

Great cat tree and my cats love it! They use every part, scratching posts, climbing, swatting at toys, sleeping in the cave. It's good that the levels are not perfectly equal and lined up together - makes it easier for cats to get from one level to another.