Carabas

I've just walked back into the McKittrick Hotel. It's the middle of the day, so the place is mostly closed, but there's a guy at the front desk who tells me the owner has died. I climb up a few flights of stairs and come to a room with an old glass bottle hanging on a rope from the doorknob, with a red liquid like blood inside. Hanging next to it there's a card with a series of about 10 questions about the purpose of your visit. One of the questions mentions Maximillian, and reading it, I realize that each question is a reference to a different riddle to solve or mission to carry out, each given by a different resident of the hotel. If a visitor has completed one of these riddles/missions but didn't have a chance to report back before the end of the night, the hotel will permit them to return during the day, to wrap up unfinished business.