Really like, cats like. I did not notice that it was lacking sisal rope on the one side when I bought it, so I purchased some and added no they love it. there were no any holes drilled for the top "bed", had to have someone come and drill those for me. Still a good price and very nice. 

Pros: cats like, seems well made and only one piece to put together. 
Cons: not enough sisal rope and no holes drilled for the very top bed