Arts vacatures in Rotterdam

We are two university professors from Spain who are visiting TU Delft from the 7th to the 11 of July. We are travelling together with our two girls of 10 and 13 years old. We are looking for a babysitter who likes playing with the girls and who speaks English, since we want to take advantage of the stay to improve the girls' English skills (this would be the language of communication with them). Our daughters are very active and enjoy physical activity, board games, arts & crafts, etc. Although we will be there for those five days, we are not sure yet for the days and schedule for which we will need the babysitting. Do not hesitate on contacting us if you would be interested.