Native English teacher in Madrid

We are looking for a native (British, American, or Australian) English teacher to give class to our children during 3 hours twice a week (Mondays and Wednesdays from 17:45 till 20:45), starting on October 2019. We pay 45 euros per day at the end of the month. We live in Madrid, near Pacifico metro station.

One of our children (aged 16) already has her Proficiency Cambridge Certificate, two (aged 9 and 12) have an intermediate level and two (aged 4 and 6) have a beginner level.

Thanks,

Manuel and Inma