If your luggage are HEAVY this is the best option:
From the airport you take the blue metro line(and not the suburban railway,they are at the same place,please make sure of it)
and you will get off at Ampelokipi metro station.
You will get out of the station from the exit side that writes Alexandras/Panormou.
Outside the metro station you will see a bus stop right in front of you.
You are going to wait for the bus number 14.You will ask the driver to get you off
at the Agios Loukas bus stop (20-25 minutes after you get on the bus).
Another characteristic is the student house you are going to see in front of you,
a large building half painted burgundy,half light yellow. Student house is fititiki estia in Greek so you can also
ask him to get you off at the F I T I T I K I E S T I A at Patission street(Agios loukas bus stop)
Right behind the student house(fititiki estia) is the Agiou louka street and at number 41 I will be waiting for you(be careful,there are two 41's,we are the second in the row and the bell writes C. Comfort)
If your luggage are LIGHT:
From the Airport you take the yellow suburban railway and get off at Neratziotissa metro station,change to the green metro line towards piraeus and get off at K. Patissia metro station.You take karavia street (the street between the bakery and a bank) and walk until you find the Agiou Louka street.You turn left and at number 41 of the street (be careful,there are two 41's,we are at the building with'C. Comfort' bell) This whole procedure is about 7 minutes walk from the metro.
A third approach in case that you take the blue metro line
From the Airport : Take the blue metro line and get off at Monastiraki metro station,change to the green metro line towards Kifissia and get off at K. Patissia metro station.We are 7 minutes walk from the metro