Greek courses take place in Athens (October till June), Nafplion (Easter Holidays), on the islands of Lefkada (June) and Syros (June till September). See also the Google map below.
Additionally, if you can not make it to come to Greece, also online lessons are possible.
The administration is located at the Athens school, which can be visited from October till the beginning of July (by appointment).
The easiest way to reach Omilo in Athens is by metro; the nearest station, Maroussi, is 300 metres away from the school. Maroussi station is on the Green Line or Line 1 (ISAP) from Piraeus to Kifissia. From the center of Athens, it takes about 30 minutes to reach the Omilo school. Click here for more directions on how to reach the school in Maroussi.