We booked this unit at around 5pm in a condo/hotel/timeshare hybrid after our original host in the building bait and switched on us upon our arrival. Unfortunately it seems the unit was not available (something about Mark needing to accommodate other renters due to plumbing issues somewhere else?). Mark offered a refund/credit on a different listing also in the same building, but we really didn't have enough time to think things through. He refunded our payment and stopped communicating in about half an hour even we though we explained our situation and tried to call him directly. It seems Mark is a property manager and not a personal host. I'd keep this in mind if you are concerned about host responsiveness in the event of any issues.