They do provide hairdryers at CBR. They're not in the rooms when you get there, but just called Housekeeping once you get to your room and they will bring you one. They will also bring you an iron, ironing board, and extra pillows, blankets, and towels if you need them
P.S. Don't ask for these things at check-in because the Front Desk people don't handle them. You have to wait till you actually get to your room to call Housekeeping to request them.