I ordered a open box tree, and it was broken on the bottom when it arrived.  Wayfair gave me a full refund, so that was awesome, as it's now super tippy and can't  be used for climbing and scratching.  It would just fall over.  Had it been intact, I would say that the base, because it's a very slim post (but still rather tall), is a little too narrow.  If you have a smaller cat, this would work well, but if you have a beefy boy or girl, they would probably yoink it over when they climbed it.   Carpet is awesome with lots of scratching surface.  Bowl on top is smaller sized, but, again, would be perfect for a small cat.