I'm checking with a couple of mates re the U/D jump seats..I can't remember. They seem to think one jump seat at top of stairs with galley at rear.
But i DO remember the galley that ran from R1 to L1 along the right side of the cabin. It was the coldest area I ever worked in , and till the day the a/c was retired, they could never fix it. We wore gloves and jumpers during the long night sectors ...the further we went, the colder it got...and SYD/LAX is a looong way.