Yeah Dead by Daylight doesn't really do "realistic" locations in the sense of trying to make them actually look like a real place with an appropriate layout. Their whole thing is that you're trapped in "the Entity's realm" and it's recreated these places from survivor's memories and stuff, so they're always a bit abstract (for gameplay purposes) rather than one to one accurate recreations of whatever general or specific idea they're based on.
Honestly that's why I was so surprised that the RPD map is so accurate to the Resident Evil 2 remake, albeit with a lot of destroyed walls. But in the case of the Nostromo, I'd imagine it's just going to be a lot of themed corridors with one or two "main" rooms, like the lunch room we saw in the CG teaser and maybe one or two other bigger areas.
