The Captains Quarters, located on Deck 2, immediately below the bridge. Also on Deck 2 are the other senior officer's quarter's, all nearby. They are twice the size of regular officer's quarters. Rank, after all, has it's privileges.
Located throughout much of the upper half of the ship, the Officer's Quarters are standard issue. They can be enlarged to accomodate married couples, with the Commanding Officer's Quarters being double the size of any of the Senior Staffs.
Located throughout large portions of the ship, Enlisted Quarters serve as home to all Junior Non-Commissioned Officers. Senior NCOs (Chiefs and above) get the equivalent of Officer's Quarters.