We had a great time at Dimitris, we highly recommend it and will definitely go again in the future. He and his wife were accommodating and helpful.
We stayed for a month. Everyone we met in Thessaloniki was nice and welcoming and the food tasty. We really appreciated the location of the flat (in a nice, quiet area, but still close to the centre). The flat is cosy and spacious so we could both work well there during the day.