I like the concept behind this - the design, color, and material covering it are great, and it's not so big it takes over a room.  I have two kittens and it suits them just fine, but like other reviewers, I'm a bit concerned that it isn't too stable for larger and enthusiastic cats.  My cats love it but I'm afraid that as they grow, they might knock it over easily.  They love the hammock part - they actually sleep in it together, but they tend to fall out of the cylinder in their enthusiasm to get the hanging toy.  The pieces do wobble - we can't seem to tighten them enough, and even the hammock seems to tilt, even without cats in it.  I'm okay with it for now, but I'm not sure this will be good for our household in a year.