Stelios' house is located in the heart of the city: from there you can reach any tourist attraction within a 10-20 minute walk in the vibrant old town.
The flat is pretty small but has anything you'll need during your stay. Stelios left some earplugs for us, but they haven't been necessary at all, for it's been pretty quiet at night.
Price-wise, this is a best buy. It's a simple but clean and cozy place, and the location is the best you'll find for the price.
Thanks for hosting us Stelios, Athens is a wonderful city and we really hope to be back soon. Cheers!