Perfect location, we only had 1 full day in Athens (2 nights, late arrival and early departure) and we managed to see most major sites walking only (30,000 steps, but we never needed a taxi or subway). We even took a 2 hour break back at the apartment in the afternoon, it was very well located.
The space was perfect for our family of 3. The main bed was very comfortable, and there is plenty if room and privacy.
The host left us breakfast food and wine (we actually rarely drink so we didnt try the wine, but it was a kind gesture. The only thing that may bother some people is that you have to push a button to start the hot water heater 45 minutes before you shower. Not a problem for us, once we actually ate at a restaurant 1 mi ite away, ordered food, then I went back to the apartment pushed the button and was back in my seat before the food arrived. I dont know how big the tank is, but we had plenty of hot water for 3 showers. Anyway I recommend for the location and kind host. Oh, she also arranged our airport transfer, and he was awesome.