This was just what I needed for my cat. He is 5 years old and he is very heavy, so my main concern was that the tree would not hold up to his weight, but it stands just perfect as he plays or sleep on it. My cat loved it. 

Pros: Easy assembly, looks good in a corner or window and is very steady
Cons: The top bed is a little bit small for adult cats that weight more than 10 pounds