Part-time Au pair

Hi, I am looking for some help with my son. He is 6 years old. We live in Tres Cantos (north area), only the two of us. I need someone to  be with him in the mornings (not taking him to school) and to be with him some afternoons in his activities until 8o'clock in the evenings. WEEKENDS OFF. In exchange, I let the room for FREE, ONLY PAY THE EXPENSES: internet, water and electricity.
Please, check the map before calling. I use whatsapp. Thanks.