George is a friendly host, keen to meet new people. The apartment is self-contained, but next door to his office. (He's a photographer.) The rooms are big enough for most people's needs. Despite being in a bustling city centre, the apartment was very quiet.
The location is just across the road from the Church of St Dimitrios, and just up the hill from the Roman forum. It takes about 20-25 minutes to walk back from the White Tower area, but there are plenty of tourist sights higher up the hill, for which this may be a better starting point than certain other AirBnB hosts.
George provides a folder of local bars, restaurants and shops he can recommend. Each morning we had bougatsa for breakfast from To Anouteron and coffee from Coffee Island, just across the street, and we dined twice at Kanoula, 5 minutes' walk away (#1 or 2 on TripAdvisor - booking recommended!)
We stayed with two AirBnB hosts in Thessaloniki, both excellent, but this place was probably our favourite.