Very pleased with this  purchase! Very durable. 
Great for 2-4 year olds, and only about 3 kids at a time. No issue with it being top heavy, or needing any adults posted on either side. 
If you are looking forward to the item having a ball pit, you need to just buy a ball pit. Basically the bouncy part of the house is sectioned off with an inflated low divider. Instead of putting the balls  that came with it in there, I put them at the end of the slide. Folds up pretty easy for storage, and has a zipper bag for protection.