Beth and Loki - secret passage
Loki wasn't necessarily concerned with the idea of scrutiny given where they were and the fact that he was leading the way with the magical fire that was in his palm.
"It means there is, as you can readily see, a cornucopia of lost or gathered spirits. Their combined energy and power may be the cause of the dark and otherwise unsavory energy and intention of the place." It would stand souls that are not lost would have moved on and would not cause harm. These were clearly lost or malicious spirits.
"Usually, one may ward spirits away with words, artifacts, or helping them to realize that they have passed and need to move on. That's beside the point if they don't want to leave or if this entire area is made of nothing but dark energy."
It was quite literally the definitive for them to not move on. Loki glanced up at the scratching, noting that she was possibly correct. "All in theory of course. I have no solid proof which seems to be the case with everything." He thought he could smell water--but briefly. That would only mean they were leaving the hotel or getting closer to a sewage. Ew.