The apartment was sublime. The location was only 3-5mins away from the Petralona Metro and (2) stops away from the heart of Athens city centre. If you enjoy a walk, the historical parklands surrounding Philopappos Hill is very pleasant and a great walk to the city (hardly a tourist to be seen and yet it is a treasure).
We never met Nina but she was very responsive and was always available and kind when we had questions or requests such as an early airport transfer.
The apartment is newly renovated and you automatically feel at home with all the amenities available to you eg. iron, shampoo, body wash, toiletries, microwave, clothes hanger, fridge, TV etc etc.
Although there is lots of grafitti in the area, it is so safe and very quiet. We rarely heard a car drive past or any people walk past our room.
We recommend this accomodation highly as it is a great spot to explore the city of Athens and the outskirts of the city without being directly being in the Centre.