My cats love it, especially top floors ))) I thought that they will love the hammock, but all my cats are large size, 15+ pounds, so they did not even try it.  Perhaps the hammock will be good for a kitten or a small cat. I have this hammock for 6 months and it is on top shape, although 4 active cats use is as a battle-field every day . The balls were lost and I removed the hammock but this really does not matter. The material is very soft and easy to vacuum. They assembly was easy, I am not too handy but put it together within 30 minutes.