Stayed for 2 wks with my wife, our 1 year old baby boy and Bob the Pug. Location is great, if you come by car, as the parking is just across the street. (Thessaloniki is a very cars busy city.. need parking; 85eur for 2wks). Also there is a small supermarket just across the street.
House is very clean and with everything you need. Watch out that the street is very busy and with some amount of noise (full of students that seam not to sleep all night :) ), but we did not mind at all.
Location is a stone throw away from the water side park promenade and minutes walk to all center attractions.
Overall great stay and would come back if in town.
Thanks Oila and Stelios.