This apartment is fantastic! Roomy, modern, with an amazing location, literally on top of ruins in the plaka. You'll find all of the major areas of athens within walking distance (< 30 min) and also directly in the plaka with many restaurants, gelatos, bakeries, and tourist shops within 100m of the apartment.
Furthermore, Miltos is a great, experienced host. Ask for the list of sights, restaurants, and activities to do, they are amazing lists! The entire stay could not have gone smoother.