Such a perfect apartment! 4 of us stayed at Kalliopi's for 2 nights very comfortably. Very central location - great for exploring the city but also close to the metro so easy to get back to the airport.
The apartment has a large balcony but you can also go onto the roof to take in the incredible views of Acropolis.
Kalliopi met us at the apartment and showed us around/gave directions for markets etc. incredibly helpful and friendly.
I would highly recommend this apartment and hope to stay again in the future.