Yep, not good. my sister used to live in a condo with a 275+lb guy living upstairs and never heard him. His girlfriend moved in who was ultra skinny and you could hear every step she took. Then he moved out, and a couple with a 7-yr old boy moved in and all the kid did was shout and bounce a ball in their kitchen- THAT she heard quite well. They complained about my sister playing the piano, and she moved in a few months.