Thanks for the input, Cat! Your ideas align with what I was thinking, which is reassuring, except I was looking at doing the first region in a one-point shot from the back. I think your two-point suggestion works better, and I might move the staircase to the other side of the gondola so it can be in the foreground to provide depth.
Since you've guessed, I will verify that this is indeed a ship, but an airship, not a...sea ship?
Room one, as you've labeled it here, will be the charts desk where the radio operator sits, as in this one from the Hindenburg:

And room two is the control car, like this one from the USS Macon (but wider):

Part of me wants to do a third area, if you walk all the way into the nose of the gondola (so all the way to the left of the schematic I drew), you would switch to a view from outside the ship -- from the same angle as the image below, but zoomed well in on the control car:

In my mind, this would (1) provide another view of one of the neater parts of the ship, (2), give some additional depth to the environment and (3) allow the captain to converse with the PC without turning away from the controls.
Would that work? Would it be strange to, when they have dialogue, see the words appear outside of the ship?
Thanks so much for the help. I'm trying to get functionality sorted before I commit (digital) paint to (digital) paper.