Pretty good! I got this for my 2 cats to play on because it is prettier than a regular cat tree. Day 2 and they love it! It is definitely heavy duty enough for them, but I wish it were a bit more stable. It wobbles a little when the cats are on the top two shelves, but I can tell it is sturdy enough that it won’t actually fall over. It took two people about 45 minutes to set up.