From somewhere in my archives, here's a list of the laundry facilities on the Dream:
deck 10 midship - starboard - opposite 10572
deck 9 forward - starboard - opposite 9500
deck 8 aft - port - opposite 8150
deck 7 forward - port - opposite 7014
deck 6 forward - starboard - opposite 6508
deck 5 most aft - - opposite 5192
deck 2 forward - port - opposite 2002