As I was expat in Thessaloniki for a few years I can recommend and tell, Absolutely great location, the right spot in town.
Super easy to walk around all the areas you could be interested in. Also, a bunch of nice places like shops, cafes, bars, and restaurant along with great landmarks are just around the corner.
Keep in mind, that place will not fit people wanting quietness after 10 pm, there are bars across the street and you will get plenty of street noise and music during the night.
If that not bothers you and you want to experience the full Thessaloniki vibes, Evi's place is the one that you want to be.
Evi is very responsive and easy to communicate with.