Ambrosio's first instinct was that they probably had a small cache there since it was unlikely someone would go into the bathroom thinking they did anything but their business. Despite not knowing whether they were human or revenant, he did need supplies and scouting information. If they were doing something more sinister than surviving, he needed to know in case he met more thralls like himself. He entered the room, careful to look for anything that might be a trap, especially careful of tripwires or wires attached to the door to activate upon opening too much. Barging into a possible bolt hole was always accented by an ever present trap danger.