Eleni's niece, Athina was a great host to us. She was very friendly, as well as very quick when it came to communicating and answering our questions. The place is very spacious, perfect for 4-5 people. It is also very well located in the city, just a 15 min walk (by foot) to the acropolis. The neighbourhood seemed safe (we had no problem getting home later in the evening).
As for eating around the apartment, there's a pedestrian street filled with really nice restaurants and cafes just around the corner.