Babysitter for 2 children

Hello I am searching for an English mother tongue babysitter for my 2 children (6/9 years old). The girl I am searching is responsible, has experiences with same age children and is proactive. It means that she should play and help guys with homeworks and sometimes catch them up from school which is located close to our house.

We live in Lecce and at the moment I'd like an help for 2 hours twice a week in the afrernoon, sometimes I could ask for a friday or saturday night. Thanks a lot and let me know. 

Silvia