The Apartment was very clean and we felt very comfortable. The air-conditioner saved our life.
We also had a supermarket and a pharmacy right next to the apartment, what we really appreciated and the location of the apartment was just a few minutes by feet away from the Acropolis&metro.
Unfortunately we didn't have had a view at the Acropolis from the balcony, but we enjoyed it anyways.
Some general equipments, which would be very useful, were missing and we had to buy it on our own.
I personally would advise against a hire of a car because of the parking situation.
All in all we're very thankful that we could stay in Jenny's apartment and enjoyed it really much.