Konstantinos is a great host that quickly responded to all of the inquiries that I had. He also hosts a wine tasting experience at his own Wine Bar Oinovate, which is at the same building where the apartment is located and you can book it through Airbnb experiences.
The apartment itself is centrally located, a few minute walk to the sea and has everything you need for your stay at Thessaloniki. There are lots of bars, restaurants and cafes to eat nearby and Lime scooters are always parked in a walking distance, so you don't need to rent a car, if you plan to stay only in the city. Can definitely recommend this apartment!