This is an illegal operation. The building is not permitted for Airbnb rentals. Bianca instructs guests to pick up keys to the apartment in a lockbox hooked to a fence on a private parking lot several blocks away. Bianca also instructs guests to lie to anyone they encounter in the building, to never mention Airbnb, and to say guests are staying with some random man.
This feels very unsafe and I did not stay the night. I left immediately and Airbnb paid for my hotel that night. Airbnb says they are investigating, but given that Bianca's rental is still advertised on their site, I don't think it's been closed yet.
Don't stay here would be my suggestion!