We stayed as a couple for a week in March. Orestis was very friendly and was quick to communicate with us. He gave good advice about finding the flat and met us promptly. He was very friendly and welcoming and gave us lots of advice on places to visit and eat.
The apartment is very light and airy. There are great views on three sides, including of the Parthenon. It is well equipped and secure with very good WiFi and a small but adequate lift. There is also a large balcony with dining table and chairs which has a similar fantastic view of the Parthenon as in the apartment.
The apartment is in easy walking distance to many tourist spots, the Parliament, Agora, Monastiraki, etc. There is a small supermarket a couple of minutes walk up the street and there are many cafes, restaurants and shops close by. There is a church nearby, too, and the bells did start ringing at about 6:30 am, then on the hour and half hour. A taxi driver told us this was probably because of the proximity to Easter, so they may stop ringing so early soon. We bought ear plugs and generally slept through it, anyway. We really liked the apartment with its great location and views and would stay again.