I was a little worried about the height of this cat tree but when I got it all put together it was fine.  I thought it might be too high and unstable (after reading reviews prior to purchase) but so far so good.  It is wobbly but it doesn't seem to bother my cats.  I have 4 and one took to it immediately, owning the highest tier like the Alpha cat she is.  My other cats aren't very interested in it yet but they are slowly warming up to it.  I think Libby (the Alpha cat) might be keeping them away at times - she loves HER new cat tree.  The catnip all over it does help.  I was also concerned that the "fur" (instead of carpet) would be an issue.  All my other cat furniture is carpeted.  It does "shed" and is slippery compared to carpet but the cats seem to be able to climb on it without trouble.  AND THANK GOODNESS FOR THE SCRATCHING POST STYLE PILLARS!!  They saved my wicker blanket trunk for certain destruction.  Overall an excellent value!