The apartment is perfect for 2-3 people. It's clean, comfortable and it has all the necessities you will probably need for a trip. The street is quite noisy and the AC in the bedroom doesn't work, but the bed is so comfortable that you probably won't mind those two things at all. The location is good, with a walkable distance to the center. Also, the bus stop for the line that goes directly to the central bus station is also pretty close, which can be really convenient for people who will travel to Thessaloniki by bus.
Our host was Joanna, and although I didn't have a chance to meet her, she was really quick and responsive to all of my messages related to not only the apartment, but Thessaloniki in general. I rented the place pretty much last minute and she contacted me right away and provided me with the details on how to get to the place, what to visit etc.
I fully recommend this place, as it will make your stay in Thessaloniki even better! Thank you for hosting us, Joanna!