I think any resort can be quiet ............ depends on time of year, depends on building/room location, depends on floor, depends on view.
Surprisingly some of my quietest stays have been at POP Century. With 30-ish stays I would say most were very quiet but we avoid preferred and main pool. DS and I spent 12 days one trip on upper floor lake view. On our L of the building we never saw or heard anyone the entire trip. We also enjoyed some very quiet stays at Coronado Springs in Ranchos. Wilderness Lodge was so intimate and peaceful.
Some of our loudest have been 2 stays at Music (Cheerleaders one trip, Police issues another), AKL (kids running up and down halls and pool facing room) and of course our BTG trips but that was all about timing, not resort.