I stayed in Yiannis' flat for 2 weeks as I was studying for a Summer Course at Aristotle University, and the location was perfect! It was close to pretty much everything and the nearby street is full of shops, bakeries and little cafés. The neighborhood is very safe, and the flat is great! It's cozy, convenient and it has everything you need (including shower gel, shampoo etc which is extremely handy!). Yiannis is the best host, he went above and beyond to give me suggestions on what to do, what was happening in the city etc and he left many maps of Thessaloniki at the flat for me to navigate easily. I will definitely be back!