Babysitter for an American family in San Sebastian July 2 -20

We are an American family looking for someone to help us with our girls ages 4, 5, and 6 while we are in San Sebastian July 2 -20. The hours will be different depending on the day. We will mostly want help in the afternoons and evenings. Atleast 2 nights a week so that we can go out with friends without the girls. A lot of time wil be spent with the whole family helping at the beach or on excusions. You must speak good English, easy to get a long with, friendly, responsible, great with kids, and flexible. We would prefer a Spaniard who speaks god English. But are also open to other people. The salary will be hourly and depend on your experience.