Housekeeper Needed - Full-time / Part-time

I am looking for someone to clean my home: run the sweeper, mop, dust, clean bathrooms. I have a tri- level home. My schedule us flexible as to time and day. We are not early risers, so late morning or afternoon works for us. We are retired, so no work schedule to work around, only chemotherapy appointments. Would also like to to able to change time and day if necessary without any payment penalty.