(Hmm...the title of this reminds me of a WWII POW movie)
I was in Bunk 14 on my trip. Awap is right, it's right next to the ladder (convenient for trips to the head and if you forget something in your bunk area you want on the dive). And it did put my head closest to the center line of the boat.
TwoBit got a good spot on his bunk across the way where it was exactly on the center line of the boat. But I don't know which number it was. The only downside of it was that the engine room is on the otherside of that bulkhead. (but at least this trip, he didn't complain about my snoring!)
The "rooms of 4" bunks to the right of the bottom of the ladder are the farthest from the engine room and can be a bit quieter.
One other major but simple tip for the weekend trips is to head for bed as soon as you have your post night dive snack and drink your cup of water. Plenty of rest can make a difference on how you feel on Sunday, and not all of us have Divemaster Melanie's energy to start before sunrise and go 110% until well after sundown. Even with the longer surface intervals and EAN32, the N2 loading of a five dive Saturday schedule may tax your system and wear you out (your mileage will vary). It did me.
The advice about the ladders is good. The thing I'll repeat is to be patient. Both the Fling and Spree rig tag lines that float to the bottom rung of the ladder. When that line is clear, head toward the middle portion and grab on. With a firm grip, take your time removing your fins and slipping the straps over your wrists. Then watch the timing of the ladder motion and when things look fairly calm, make your move to grab the handrails and put your feet on the bottom rung. Compose yourself for a second or two and scramble on up. If someone is already on the ladder, hang out on the tag line until they're clear.