My husband really appreciated how easy it was to assemble the cat house (20 mins). Our bigger cat (12lbs) plays on it more than our smaller cat (8 lbs) though she seems a bit big for the house. She can climb to the top, but there's not much room for her to sprawl out on the flat parts. 

Also, I got the impression that the house a navy blue and white online, but in person, it's more black than dark blue.