Kosti's place is a fabulous place! It is very clean and beautifully decorated throughout. You are right in the heart of Plaka, within a walk's distance from the key Athens sites. If you are a bit anxious or uncertain, being in a new city or unfamiliar area do not despair! Kostis will reassure you through frequent, immediate responses and great local suggestions so you don't feel out of place and make the most of your trip. He also offers a lift from and to the airport at a fee (smaller than the typical cab ride) which comes handy especially if you are carrying a lot of suitcases or when there are strikes going on (or if you just prefer a familiar person to pick you up!). The flat is also in a very safe part of the city which is important too! I was arriving a bit late at night after a late flight and Kostis made sure to frequently message me and guide me throughout which was so reassuring. He (and his lovely partner Liza) was in the flat when I arrived to show me the ropes and answer any questions. Stay here when you are next in Athens, you won't regret it! :-)