This is a terrific location, great apartment unit, clean, stylish, a stocked fridge & coffee supplies, AC and Wifi that works well. Also a great balcony with a vew to the city. The bed is good size for a couple - and if you like firm mattress you'd be right at home.
Remember you are in the center of a large city with traffic and noise but all the benefits of being in walking distance of just about everything - shopping, museums, the wharf, excellent bakeries, cafes and restaurants. We also always felt safe in the building, the neighborhood and throughout the city. Thessaloniki is a great city, often overlooked but a terrific place to visit and this unit is a great place to stay.