We visited cosy by thess1home for Christmas holidays. Taking into account that Thessaloniki has low temperatures through wintertime, I definitely do not recommend this apartment for winter season stay. Property does not have a central heating system, as noted at the home description, but only two air-conditions which are unable to heat the entire place, making the apartment cold and unwelcoming . Cold was coming through the windows and there is no soundproof. Corridor, bathroom and kitchen have no heating system installed.
The plumbing at the bathroom definitely needs some restoration, as when taking a shower, foam was coming out through the drain.
The property is 30-40min walk distance to the center of Thessaloniki (Aristotelous square).