A good product and design works except the opening for the box for the kitty is too small for my small cat to get into easily from the second platform. We ended up carving out part of the opening for her. It went together fairly well except the instructions seem to be a bit backwards at some point so I just put together how it made sense and it looks just like the picture. I wish it was larger and the door went all the way up, but it works for what we need.