Had this shipped to my sister for Christmas.  Her son-in-law put it together in less than an hour.....probably would have been less but a 17-month old was climbing on it ... lol.  It is really well-made and the shelves are very sturdy and fuzzy soft.   Actually haven't seen the cats on it yet because they are hiding from a visiting dog who torments them.   Anyway, it is perfect.

Pros: Easy Assembly; well made
Cons: nobe