Childcare Needed

We are looking for a great nanny for 1 child in San Francisco. We would prefer someone who could help out with light housekeeping. We would prefer a nanny who does not smoke and who is CPR certified. I am a nurse and work during the night/sleep during the day. My husband works from home, and is available to provide breaks. We live within a block from the park, and near plenty of outdoor space for walks.