Postal address, for locating Spiti Athena apartment on Google maps: Ipirou 28, Athens, Greece

Thanks to its location, access to Spiti Athina is excellent, by all means of transport. Moreover, most major sites of interest, museums, restaurant etc are within walking distance

Subway: Victoria station in 400 m, green line
Subway: Omonia station in 700 m, red & green lines

Athens subway map   http://www.ametro.gr/page/default.asp?id=48&la=2
 
Many bus and trolley lines, with stops just around the corner on Patission avenue
Athens bus & tram company: http://www.stasy.gr/index.php?id=33&L=1
 
Piraeus port 20’ by the subway (Omonia or Victoria stations, green line). 5 minutes walking from Piraeus subway station to the ships’ entrance (Cyclades ships).
Most popular passenger ship companies to the islands:
Blue star Ferries: http://www.bluestarferries.gr/en/
Hellenic Seaways: https://hellenicseaways.gr/en/

Athens international airport El. Venizelos: subway (blue line), suburban railway (ends at Larissa station, 800 m from Spiti Athena), bus.
Official site: https://www.aia.gr/traveler/