We were very happy with our stay at Konstantinos's place. He was a communicative and welcoming host--he arranged rides for us to get to and from the apartment, was there to meet us when we arrived, and was flexible about finding a place for our bags, since our check-in and check-out times were a bit awkward. The apartment itself is simple and comfortable, with everything you need for a home base. The main appeal is the location, which is walking distance to the Acropolis and other sites, and convenient to tons of restaurant options and shopping. Very happy with our experience.