Kostis’ place is wonderful. It’s centrally located right near the main square of Athens - Syntagma Square. Not only was this great for visiting the many sights of Athens that are all within walking distance (Olympic stadium, acropolis/Parthenon, Plaka district), this provided for easy access to the metro/subway (which we used to access the Piraeus Port) and the express bus that brought us directly from the airport.
Then appartment itself is great. It’s on the 7th, and top, floor of a very clean and safe building. There is a very pleasant concierge personnelle who was working at the front desk when we arrived and helped us get into the building (although you don’t need to speak with him, if you don’t want). There’s an elevator directly to the front door of the apartment.
There is a beautiful pool that provides magnificent views of the acropolis from!
All in all, we thoroughly enjoyed our time at Kostis’ place and would recommend it to anyone looking for a clean, centrally located place to stay in Athens.