Native English Teacher for kids needed!

Looking for a fun, enthusiastic native English teacher for my children, aged 5 and 7. 
They already understand everything and speak quite well but need more practice and a bit of help reading and writing. I want them to have fun, play games and be forced to speak a lot during classes. 

We live in Majadahonda, right next to the train station and bus stop, and would need someone to come twice a week in the afternoons, for about 1h each day (preferably Tuesdays and Wednesdays or Mondays). 
If you're interested I'd love to hear from you.