Summer Break Greek teacher // 2 children // 3 hours per day // 3 per week

Hello, we are looking for someone who can assist our children (ages 7 & 10) with Greek lessons during the upcoming summer holiday!
We need 3 sessions per week, from 9 to 12, to include play and learn (Greek language speaking), Greek Grammar/writing and the 3rd will be a long shot, but it would be great if they also could be able to teach them more piano in the 3rd hour (basic).
We would like this to start in July, and until mid-August, so this person has to be in Athens for around a Month!
Finally, even though the aim is to have more Greek practice, it would be great if they can communicate well in English (just in case)!
Cheers!