Easy to put together, but it's on the smaller side compared to others I've bought in the past.  It's a great size for the place I wanted it, but has some smaller surfaces for two of my cats.  My kitten loves it and thinks it's specially made for her.  The little "hanging basket" is her favorite for napping.  Since the kitten first used that, I now find my biggest, and heaviest, cat using it at nap time too.  So far, haven't put up the leaves...the cats are fine with them being a "free toy" for now and clean up is easier after destruction.