we had a one week family vacation in Athens at Alexandros' place and we truly had an awesome experience.
1. Alexandros is very prompt, whenever we needed anything (let it be a question on Athens, about how to turn on the air conditioning or asking for an extra tool) - he was always there for us.
the apartment itself is big and comfortable, it held easily our 6 people and is well equipped with everything we needed to feel at home.
above everything the location is just the best in Greece: a nice quiet green street in the very middle of the Plaka (ancient Athens), 5 minutes walk from the amazing National Gardens, 15 minutes walk to the Acropolis and to Adrianou St. (a must) surrounded with Tavernas, little Greek shops, next to every bus/tram you need.
we had a great relaxed vacation and and we highly recommend it!