The tree was easy to assemble.  It fits nicely in our small, overcrowded living room, between two tall cabinets.  From the top tower, it's easy for our cats to jump to the top of the cabinets, where I've put two soft pads for them to lie on while surveying their kingdom.  They're still small kittens, so haven't explored all of it yet, and haven't tried the hammock.  They can't jump yet to the first level, but they shimmy up the posts to levels one and two.