ENGLISH CLASSES FOR CHILDREN

Hi,
I’m looking for an English native speaker to play with my two children (aged 4 years old and 16 months old) at our home. Classes are really for the eldest one but it will be impossible not to have the youngest one around ;).
We would like twice a week: Mondays and Wednesday, from 19 to 20 p.m.
We live very near Colon or Serrano underground.
Thanks!