If your genset is under your bed like mine you probably have space between the top of your genset cover and the under side of your bed. I store blankets, pillows etc in this space and around the sides of the cover. The only reason I run the genset at night is to use the AC. The AC makes more noise than the genset now. I do feel a slight vibration but no noise. A layer of lead sheeting bonded to the inside of the genset compartment would be another way to reduce noise inside the bed room. 6 ins of blankets etc on top and 12 ins on the side of pillows will insulate sound more than 1/2- 1 in of acoustical foam. At least that is my experience.
