The best job would be to remove it from the the room and remove all the hardware from it. Lightly scuff the surface with something like a scrubby. Clean it with a dewaxer and degreaser. Useing a nice two part epoxy paint would be the method of choice. Second would be a good grade of epoxy paint off the shelf from the local box store. Let it cure good for a at least a day before you replace any hardware.