Babysitter Needed for my Children - Full-time / Part-time

We are looking for a part-time babysitter for 1 child in Alexandria. We would prefer a nanny who does not smoke. Child is 1-year-old, no health issues. Hours can be flexible, ideally looking for up to 4-6 hours/week, mostly weekends. Baby goes to daycare during the week. There is street parking. This is in an air-conditioned home.