We stayed in this apartment in Piraeus for a little over one week. We really stayed this stay a lot. It is a very spacy and clean apartment with two balconies.
It was really a lot of value for the money. We also liked the location a lot. It was only a 10 min walk to public transports (metro, train, buses) and in the other direction a 10 min walk to the harbor with multiple nice restaurants on the water front. From the metro station it is only 15 mins to go to the Acropolis area.
I really can recommend this apartment. Enjoy!