We had a great experience staying at Vesna and Kostas' place. (We actually stayed in this apartment at the front end of our trip and their larger apartment at the back end.) It was all as described, clean, well-kept, and they were super helpful whenever we had questions or needs. Good location -- easy 10-to-15-minute walk to the Acropolis area, a quick walk to the nearest Metro station. And the best little bakery in Athens right across the street.