Our 2 cats are all over this! It has a very sturdy base and was easy to put together. Some sides of the condos are made out of cardboard (the smaller sides with the openings) which is a bummer but it's still pretty firm so I'm not worried it'll collapse or anything. I loved that it has a plush covering instead of regular carpet. One thing that drove me crazy about our last cat tree was that it was covered with regular carpet and little bits of carpet would go everywhere when the cats would climb up the sides! Haven't had any issues with bits of the plush covering coming off.. YET.