I know there is one in Bldg 18. We were there two weeks ago and someone was above us in the GV. We had a one bedroom. Really only had noise issues one afternoon when they were playing some type of techno music loud enough for all to hear. Some folks had patio door open since it was a wonderfully cool day. The noise got better after someone told them about it - not us. Occasionally we did hear footsteps, but nothing our of the ordinary.
Enjoy your stay. It is a great resort. If you have time take the DVC Member tour on Wednesday morning. Interesting stuff.