Grigoriou Zaliki 103b is a very conviniently located place to live in Thessaloniki.
It is well communicated with the city. There's a railway station just 30 minutes away (by foot) and a lot of bus lines available just around the corner. There are lots and lots of restaurants, bars and shops nearby (the food is excellent by the way).
Some of the most beautiful structures, historical places and attractions are within a walking distance of just a few minutes.
Considering all of the above and the fact that the standard of the apartment is really high for such an excellent price, I cannot give it less than five stars.
I really recommend this place if you want to Enjoy your holiday in Thessaloniki.