Native English nanny for the summer (Paracuellos de Jarama)

We are looking for a native English speaker for the month of July and first half of August to play and talk to our children aged 9 and 11. We are looking for a fun person who loves children and likes  playing  with them during the summertime in the mornings from 9:30 until 14:30/15:00 (lunch included), Monday to Friday. 250 € per week. We are located in Paracuellos de Jarama (Madrid)