This was very easy to put together and my cat could'nt wait to use it.  The only slight issue is that this shaggy carpet material smells pretty strong and there was some shedding.  After using a hand vaccum, the shedding has reduced.  My cat has allergies and I wish this came with a low pile carpet.  I hear him sneezing every now and then when he is on it and I think it is that smell.  If not for these issues this cat tree would have been 5 stars!