I wish I was proficient in 3D illustration, because this seems like a good candidate for it.
My main objection to the object being a door is the distance it extends into the foyer. A door opened 90 degrees (or even 45 degrees) would extend much further into the picture, almost fully blocking the view through the bedroom door. That's shown on the diagram in my previous message.
Do we know what the dimensions of the stateroom doors were? I've been using 26 inches width for my estimates.