Number of shuttlebays confirmed to be two and they're arranged one above the other with the upper main shuttlebay much larger than Shuttlebay 2.
The main recreation hall is located on Deck 12. The nav deflector on the ship is larger than what would be considered normal for a ship this size (about 40% of the ship's overall height) and is equipped with a 'quantum field focus controller' that aids in slipstream flight. Just picked up the new issue of the Titan Star Trek magazine that had a big feature on the Aventine.