I came to Athens on a short trip to visit a friend and Ελενη's apartment was perfect for my stay. The apartment is in a beautiful neighbourhood, removed enough from the city centre to feel calm but within easy walking distance of all the major sites to see, transport hubs, bars, cafes and restaurants. The apartment itself is deceptively spacious, with all the amenities you would need, very clean, and the bed is huge and super comfortable. The only advice I would give is to bring earplugs! As the general traffic noise in Athens is 24/7. I brought basic earplugs and had no issue with noise as a result.
I would also like to add that my flight was delayed arriving in Athens, and I had already agreed a particularly late check-in time with Ελενη to arrive, and still needed to catch the Metro into the city, so I was worried. But after I messaged her she reassured me everything was fine and very kindly waited up for me to arrive and show me around, despite the hour, which very much helped ease me in to the rest of my trip, which was lovely.