I would contact the landlord (the one who actually lives there) and ask to sit down with her. Explain your condition, explain what AirBnB says about the rooms (climate/heat, etc) and express that the room has been entirely too cold for you. Tell her point blank that you need the temperature to be at least X temperature. If she cannot or is not willing to do that for you, tell her she needs to refund you (prorate or something) so you can find another place that CAN accommodate your needs. If she says no, call her sons - there's a bit of ambiguity there. Do the sons own the property and she's just there to manage it? If so, calling the sons is not out of line, since they're the ones that ultimately would need to refund you and so forth. Also complain to AirBnB if she refuses. They may not be able to help you in the interim while you're there, but you can leave appropriate feedback there. Gloves/heat packs might help your hands in the meantime but I'm not sure what else I can suggest - since you're not a permanent resident there, buying relatively expensive electrical equipment (space heaters, electric blankets) probably isn't feasible.