When I say that my cats and foster kittens are obsessed with this cat tree, it’s an understatement. Every time I come home, as many as can fit are sitting in it either relaxing, playing, or scratching. It took me maybe an hour to put together by myself. It was not difficult at all, just required some patience because a few of the pre drilled holes took a minute for me to find. Ultimately, it’s a very solid piece. I’m not at all worried about it falling over even with all of the cats playing on it. For someone with multiple cats, the size of this is honestly perfect. Just make sure you have space for it!