Keeping Quiet
It appears that Melissa Dumas, Madonna's former nanny, revealed certain aspects of Madonna's preferences regarding noise levels while she sleeps.
During an interview with TheTalko, Dumas mentioned that Madonna prefers a quiet sleeping environment. According to Dumas, the singer does not permit any noise in the house, even to the extent of restricting the use of running water for showers. This indicates Madonna's desire for complete silence during her sleep, prioritizing an undisturbed restful environment.