This cat tree, as the other one I bought, does not provide ample moving room to get from one level to another.  I intended this for my older fat cat.  He does like the larger rectangular perch near the top, but in order for him to access it, I have placed the tree next to the couch.  From the back of the couch he can step up onto the little house and then the rectangular perch.  Otherwise there is no way he could get there.  

Assembly was easy and straightforward enough.  

Given the opportunity to buy all over again from the start, I would make sure I got cat trees that were easy for the cats to maneuver on and get up on.