Location, Location! This is the place to be if you are trying to see Athens. Take the train from the airport to Monastiraki (about 16 stops I believe) and walk a few min to the house through the flea market.
The house is situated within the "flea market" which is not really a flea market but they call it that. Don't be intimidated by the graffiti if you are not used to that. Instead, climb up to the roof and enjoy the breathtaking view of the Acropolis.
Panagiota was flexible with me upon my arrival and gave me good insight. She is very educated and holds a delightful conversation. If you need some insight don't hesitate to ask! Thank you again for everything, I will be back to island hop from Athens :)