The only reason for 4 stars is because the space for a litter box is a little small  the one that comes with it is for a kitten, not full size cat. I had to let the back board out a little in order for a regular size litter box to fit (just loosened the screws and pushed bottom half out). But it’s against the wall so not a big deal, cosmetically speaking. I put it together myself  I’m not known to be the most handy— so I’d say it’s an easymedium build. It does what I wanted it to do!