From the series we know that senior officers have private quarters while junior officers (i.e. ensigns and lieutenants) share quarters, but what are the accommodations for enlisted crew members? Is there dormitory style housing on the lower decks? Do the enlisted crew members hot rack? Are there separate quarters close to the hangar bay for pilots and flight crew? Are the quarters for engineers close to Engineering or are all crew quarters centrally located in the same area of the ship?
Most of / all of the crew spaces were in the front of the ship. The engineers were housed with the rest of the crew. I imagine the enlisted will have bunks like Nathan had originally. Troops are bunked in dorms. Senior Officers and Medical Staff are located near they're work areas.
All of the above.
As you said, officers have private quarters, usually closer to their departments. (Since they are never really 'off duty'.) The captain and XO are on either side of the bridge, and the chief of security is on the same deck, around the corner from the security office. CAG and Asst CAG on either side of flight ops. Medical staff have their quarters clustered around the medical department, as well, since they are also on-call 24/7.
All other crew accommodations are clustered together on the decks below B. (C, D, and E decks). Junior officers share quarters (in pairs). Senior Enlisted have their own quarters (such as chiefs and master chiefs). Mid-grade share in groups of four, and entry-level share in dorms of 12.
The design of the ship is based on a "ship within a ship" concept. The inner hull encompasses all pressurized areas in which the crew can normally operate and live. This includes all normal work areas, living and recreation areas, backup power generation, flight ops, command, cargo storage, waste processing and management, and all environmental and life support facilities. The idea is that if you strip away everything beyond the inner hull, everything would still operate the same, only they would no longer have any directional control. Everything else, the engines, maneuvering systems, weapons, communications, sensors, propellant storage...all the stuff that makes it a 'spaceship'?