English Speaking Babysitter

We are looking for a student to stay with us and babysit our son who is 2,5 years old for 2 hours. I work from home, so changing diapers feeding etc. isn't required, we just need someone to play and sing English songs etc., take him to the park occasionally, helping at night to set the table etc. at night like a family member. We are offering a room and meals in exchange. We are willing to pay extra if the student can help more but this should be discussed face to face. We already have a student living with us but she will be leaving for Spain in the middle of August. So the room will be only available afterwards.