Our stay in Thessaloniki was very good, due to the appartment of Alexandra. We (my mother and I) stayed here for 5 days. It was 30 degrees outside but the appartment was nice en chill. The master bedroom was in another room as the living room where you had an possible second bed. You can check in after 3, but no end-time. So it doesn't matter if your flight is late. We had a nice stay!