This was very easy to assemble and the perfect size for my kittens and the location by my window. It is a bit flimsy and I don't expect it to last very long. My boys love it. The mouse didn't last long before they pulled it off; I tied it back on and they promptly pulled it off again, leaving the tail behind. Now it is just a string, the tail having been destroyed. LOL. They love the many scratching posts and the ladder is small enough that even the runt can climb it.