Marija's apartment was my home for 2 months! The apartment's clean, very nice, wifi works great, and it generally has everything you need for shorter or longer stay. The location is very good - close to the sea, 20 mins walk from the center, and if you come around Friday make sure you check out the local food market that happens in front of your windows, down the street where you can get goodies from the locals! Marija was always available, she's a very kind host. Needless to say, I had a very good time in Thessaloniki.