I recall that the 747-400 cockpit bunk room was far superior to the reclaimed coat closet/lavatory on the 777..which was across from another operating lavatory...I often felt that I was attempting to nap on a submarine at war (during the flush-cycles)...WHOOSSHHH "fire one"....WHOOSSHH ""fire two".......DINGDONG.."HI, your break's over with". Very Restful.