I was in cabin 4012 - Port side forward - 2 decks above the showroom STAGE. (one above the balcony of the showroom) Outside the cabin going aft the vibration & sound could be felt/ heard back to above BB KINGS(as confirmed by an officer, my Steward & the Hotel MGR)   Obviously HAL did not have the shipbuilder install enough insulation between decks. I always book an midship balcony cabin - yes & avoiding all problems w lido's & showrooms & public spaces - this