Go to Al Dafna. The first R/A turn left. You will see a blue sign at the R/A Embassy of Helenic Republic. Then go right like if you were going to Shuefat school. Pass the school. You will see flags of the Embassy on your right, but to get to the entrance to the building you have to go around villas. You will see it then you are there. It's a bit tricky to get there for the first time.
Good luck