Obviously ships differ, but generally no there aren't miles and miles of passageways. Warships tend to actually have more, because they are more committed to compartmentalization. Freighters will have holds forward, an engine room in the stern, and maybe a couple passageways between those and smaller compartments. The superstructure will have more, smaller compartments with passageways on each deck. Remember there is a lot of interior volume taken up with fuel and ballast tanks on any large ship. And machinery spaces.
So certainly some passageways, that will be kinda narrow, but not twisting really, then a handful of small compartments (storage, boatswains locker, chain lockers, machine shop) and a couple really big compartments (holds, machinery spaces) in the hull, then more smaller compartments (staterooms, galley, crews mess, food storage, day room sometimes) connected by passageways in the superstructure would be "typical". Of course there are a ton of ships still floating out there some of which or old, have been refit, or both, so almost anything could go.
For "miles and miles of passageways" to, I assume, get lost in or be hunted by the spooky, they might want to find a way to work into the plot it being an ex military ship (like an old LSD or something) or an old cruise liner. Both of those are going to have way more compartmentalized and confusing interiors then any freighter.
