We were very happy with our stay in all aspects. The apartment was clean, spacious and warm (we struck an unusually cold few days for Athens)
The playroom downstairs was a huge hit with the kids.
The location is good too with shops, cafes and restaurants around. We enjoyed the hike over the hill to the Acropolis though less athletically inclined people may prefer to take a taxi or metro.
Great experience overall - highly recommended!