We arrived later than planned because we got a little bit lost and Silvya the cleaning lady still waited for us with the keys which was very nice! The flat was bigger than expected, at least the terrace. :)
Everything was very clean and Nikitas helped with enough information about the public transportation and so on. Close by there is a park surrounded by lots of bars and restaurants where most of the people are locals and the service is great! There are about 4/5 busses (7 mins walking distance) which drive to the centre in about 15 mins. Finding your way in athens is very easy with google maps!
The apartment is on the 4th floor so it has loads of light and sun, although keep in mind that it gets very hot in summer which is ok if you want to enjoy the full greek experience!