English native speaker to teach my kids

I look for an English native speaker to teach my kids of 2, 5 and 8 years old.I live in Pozuelo close to Aravaca station. 
From Moncloa you can take the bus 657, or by Cernanias from Principe Pio to Aravaca and then 10min walking.

If you are interested please tell me your availability. 
12€/h considering around 5h per week, that means 240€, I highly appreciate your reply. 
Thank you very much.