It was easy to assemble and it was so big, which was good for us because we have two big boys.
Although our kitties are more tree kitties but they haven't really enjoyed this tree yet. They like the scratching posts and the attached mice.
The big condo is very spacious and sturdy but the other upper two stations are kinda shaky. Maybe because our kitties are big (14 and 19 pounds). 
Overall I'm happy with the tree and it look good in our living room.