Very impressed! I was worried that the platforms wouldn’t be big enough. You know how the reviews will tell you if a tree is made for kittens this one is not! My three kitties love it. So far we haven’t transferred the litter box over, but maybe eventually. The only part they haven’t used yet is the hammock bed to the right. It’s easy enough to assemble. My only suggestion that the instructions don’t point out, is the board with the logo will face you and end up on the bottom right corner. I didn’t pay attention to this and had to reassemble  the bottom part again.