We thoroughly enjoyed our stay, the apartment is spacious, well equipped and has a really unique atmosphere. It's located in the strict city center, in a short distance from all main sightseeing points of Thessaloniki and with lots of lively bars and restaurant around. It does get pretty loud at night because of that, but that didn't really disturb us.
We were in contact with Vasilis the entire time and the check-in was super easy and convinient.
Highly recommended!