This thing is massive. The cats went to check it out right away. Its sturdy and fairly easy to put together. My cats are large (17-18lbs) so the beds are a little small for them. My smaller female barely fits. The small club house and basket bed are really only good for kittens or small cats. There are still plenty of places for the big cats to lay down. My main issue is that when on the higher platform there isnt really any where for them step to climb down and they jump from there..its kind of a far jump. Over all im pleased with it. Lots of play room for multiple large cats.