This is a great place for staying in Thessaloniki. The location is perfect, with tourist attractions, university and a million cafeterias within walking distance. Dimitris and Ruby are very nice and have taken care of every small detail. Dimitris even came to pick us up from the airport!
A few things which must be kept in mind: Because of the prime location, it can be a bit loud at night. Also, if you require two keys, make sure you mention it beforehand.
I would highly recommend this place to anyone and would stay again on my future trips to Thessaloniki.