I was seated in 6F (BC seat). A few feet away is a toilet (on the A-C side). Every time someone used the toilet, 6D and 6F are "blasted" with lots of light--"great" if you are trying to sleep or watch movies on the IFE system.

Hence 6D and 6F should be avoided!
I'm not sure what you expected when you chose a seat right next to the lav and galley.