Just took me a few minutes to put together and it looks good.  My cat went right to it and went inside.  He then started playing with the balls.  He plays with the balls a little now but he gets bored quickly.  He prefers to play outside and sleep on the couch but that is no fault of the cat condo.  It is very nice and seems sturdy enough and the balls are all still attached.  Great for the price.  Shipping was quick and it arrived a day earlier than I expected.