We spent a total of 5 nights at George's cosy flat near Exarchia and it was a perfect base camp to explore the city. The flat is clean, has a huge private terrace and all you would need for a short stay. About 25 min walk to Syntagma square.
There is a lift to climb the 3 floors which is welcome with luggage.
George was very helpful and gave us loads of tips around the area. The restaurant "Άμα Λάχει" - Στης Νεφέλης on kallidromiou (7min walk) was our favourite of our whole stay in Greece and amazing value for money.
Warmly recommended host!