Beautiful appartement in the city center in walking distance to all the sights, bars and restaurants. It was very clean and Maria was very helpful and flexible with the check in. The air-conditioning is only in the living room, so you have to leave the doors of the bedrooms open on warm nights.
Also the shower is not designed to well so you will flood the entire bathroom when you take a shower. Still, all in all it's very good value for the money if you want to stay in Thessaloniki.