I highly advise the Toni's flat to everybody who wants to be in the center of the most sightseeings in Athens. You can reach the main popular places on foot and there is no need to use any means of transportation. One of the best advantages of the location is that it is near the metro station which goes directly to the airport and within 40/50 minutes you easily get there. As for the flat, it is really nice. It is not only clean and comfortable, but also cosy and fashionable. You can find everything necessary inside.