Think I may have solved EK's problems with the ''too quiet to sleep A380''.
Having just flown LHR - DXB with EK, seated in the rear row of business, I can totally confirm there is no hint of the claimed quiet calm silence anywhere near THAT area due to the positioning of the lounge bar - quite possibly the most noisy and uncomfortable 7 hour sector for a very long time! If you are hoping for sleep on your flight, avoid the last 5 rows of EK's 380 business cabin at all costs.
With EK's gravitation toward business class crew rest, all they need to do is assign those seats to resting crew, and hey presto, instantly no more problems with low noise levels..............