Stayed at Marcus’ place for a week in March, I was lucky that a place like this was available as I booked it only a week or so before my arrival. The apartment was great! Sparkling clean and very well equipped - everything I needed was there. It was as described and even more-so! Probably the best thing about it is the location. Located in a nice and quiet neighborhood (Gazi), very close to the metro station that connects to the airport and a walking distance from the city center and all the sights of Athens. Also, some very nice bars and restaurants around.
Marcus was very responsive and quick to help and provide all the info I needed. Check-in and check-out were simple and easy.
Next time in Athens this place will definitely be my first choice again!