I had ordered one and it was very easy to put together, so I ordered a second. Boy, that one was a mess to try and put together. My husband tried everything to screw the top one on and it just wouldn't screw into the wood. But my cats love it.

Pros: My cats have a great time and the beds are real deep where they can hide from each other when playing.
Cons: All assembled except for the top bed. I couldn't screw it in, so my husband tried and had a VERY hard time. It just didn't want to screw into the wood.