I don't disagree with your comments. CJ. Most people who've tried to sleep in a crew hotel during the day have learned that leaving a radio on at low volume blanks out most of the banging and crashing of the cleaning staff.
However, where the spin comes in is that if the crew rest was where it should be - where the aircraft designers put it - the noise outside wouldn't be a problem, or at least nearly as big a problem as it is in the middle of the Economy cabin.