PERFECT location next to a road filled with good quality restaurants and the acropolis museum (visit during the peak sun in the afternoon) and acropolis itself (shuts at 8pm in the summer but queue for tickets around 6pm when cooler). Very comfy beds and super powerful Acs for the hot nights. Slightly dated decor and furniture but that was fine as we were out a lot of the day and it also added to the charm. A couple of mins walk from the Plaka shopping area and overall great value for money. Communication was great and we Drousila stayed up for us until 1.30am as our flight was late - she also gave great info on where to visit.
Note that although there are 2 bathrooms / toilets - one bathroom only has a small half size tub (fine for kids) and the other is a standing bath with shower (which was absolutely fine for adults). Its opposite a bar but we were not disturbed by any noise as front facing windows are thick. We didn't use the kitchen except for making breakfast but the basics were all there - kettle, toaster and plenty of crockery. Great flat for a few days stay in Athens.