We had a good time in Athens, thanks in part to Marina's apartment. It is exactly as the pictures, wonderful location in the great Kolonaki neighborhood, close to many restaurants, a line of taxis in front of the building, close to the subway station and to downtown.
Since Marina was out of town her mom Elena showed the apartment to us, very friendly and likable person with instructions and many good suggestions.
The only downside was the hot water, which ran out once I was showering after my wife. We then planned to give at least 30 minutes between showers to avoid a cold shower again.
I'd definitely stay there again.