This cat tree is more than enough room for my 8 lb Jacob.  I had to place catnip on it for him to take a liking to it.  As most cat owners know that you have to introduce a new item to cats slowly and let them take to it at their own pace, but he seems to like it now.  It is very strong and sturn as most of the other reviews says.  The little rope on the side is so stiff that it doesn't swing or anything, so Jacob does not really pay any attention to it, most cats like string that freely moves to play with it.  Maybe he will use it for sharpening his claws.  I gave it 4 stars because the hammock does not hang like the photo shows, it's like a flat surface on the secon tier.  The photo must have had more material to make it hang like that.  Otherwise this is a great item.