Seeking Occasional Sitter for 6 and 9 y.o.

We are looking for an occasional sitter for our 6 y.o. daughter and 9 y.o. son. We live a few blocks away from the Law school and the Row Houses. We are looking for someone who can have fun with the kids while keeping them safe and on-schedule. Experience with this age range would be a plus. Many thanks. Jennifer and Jeff