This kitty condo is the best purchase I have ever made. Worth much more than I paid.  Before I had it completely put together my cats were already playing on it, which made it a little difficult but I loved it.  It was not difficult to assemble - I did it all by myself (I am a 57 year old female).  My cats are on it all the time.  They sleep in it and play on it and just LOVE it.  It is so attractive in my living room.  I have it right in front of the window that goes out to my deck and they love sitting on the high perch and watching for creature outside.  It's a great purchase.  Do not hesitate to buy this.  You won't be sorry I promise.