I was happy at first glance, however, my cat was not.  She was not understanding why I took apart her old condo.  But alas, once she got up in the soft comfy top she was VERY happy.  The seats are so soft and comfortable and she has an even better level view out of the patio window.  I am very pleased all around.

Pros: Great value.  I have tremors and even for me the assembly was easy.
Cons: None.