I stayed in the apartment for 2.5 months. The apartment is at a perfect location only steps away from all services and also very close to the bus stop for the airport bus. It does not have a kitchen but it has a microwave and water kettle. There is a launderette just a couple of hundred meters away and several good restaurants and bakeries close by. I felt very safe walking in the area also in the evenings but like everywhere in the world one has to be "street smart".
Marina and Yiorgos really care for their guests. Small things make a big difference for a comfortable stay and they know what you need to know when you move in such as the location of the nearest launderette, vegetarian restaurants when they got to know I prefer eating vegetables, ideas for weekend outings and regularly checking in if all was ok and if I needed something for the flat. I was in Thessaloniki in August and they also gave me heads-up that many small shops and services are closed at the peak of the Greek holiday season. I warmly recommend Marina and Yiorgos as hosts!