Location is good. Nasos was helpful and gave us information for visiting Sounion during our stay (recommended) and also advised us about luggage storage facility for our last day. However, the apartment is not very comfortable. Beds were hard and mattresses poor quality. Sofa bed in lounge was also uncomfortable (we only used it as a sofa). The apartment was not really a place to relax. If you plan to party all night in Athens however, this could be the place for you!