Sofia's place was good with respect to facilities. The highlight of the place was the balcony which had a good view of the Panormou street. We couldn't get a chance to chill on the hammock as it was rather rainy/cloudy the day we reached the apartment. As far as the size of the apartment is concerned, it is good enough for 2 people only. The kitchen was well equipped. The toilet was extremely small - it was very very hard to even use the shower or the toilet because of the size. It was way too small for real! But me and my wife were just stopping-over for a night at Athens so we were able to manage for the night.
The location is good and connects to Syntagma square via metro (a 5 minute metro ride). Panormou metro station is a stone's throw away and connects with the airport directly. The frequency from Panormou to Airport however, is less. It is advisable to leave much in advance if you are going to the airport - perhaps plan the timings.
Sofia is an excellent host - she warmly welcomed us and walked us through the apartment, recommended us a few restaurants/bakeries in the neighborhood and even had kept a hand-written map showing the key places around the apartment & a few other useful papers.
All in all, it was a good experience - only drawback being the size of the shower and the toilet.