Iwas on the Sun on the first trip out of New Orleans after Katrina and had a room on the promenade deck. The only thing about having this cabin is that people can see into the cabin, so remember to close the curtains while dressing. The ship was fantastic by the way and the tapenaki restuarant was brill.
Watch out for possible noise from the thetre depending what deck that is on..often 3-5 fron.
Or you could try for Deck 5 ( Oceanview )at the Front of the ship - quite acceptable and quite near al the facilities .