I recommend the apartment. It is located in a very ok area, close to the subway and several shops and restaurants. The apartment faces a quiet inner courtyard, and the balcony is a good place to have coffee in the morning. The kitchen is extremely well equipped. Also, although the temperature during my stay in Athens was lower than average, the cold was not felt in the apartment due to the two air conditioners and the electric radiator that warmed the rooms very well. Cheers to the hosts for everything!