It's a place with a great location in Tessaloniki. There're plenty of restaurants within a few minutes walk from the apartment. The touristic sites are also not far away from there, just take your time to walk and discover the city. I especifically recommend walking up to the Acropolis wall through the old city from there. You'll walk through authentic little Greek streets (a must for me).
Keep in mind however that the apartment is not located in the most quiet part of the city, there's constant traffic through the street and if you sleep in the bedroom near the balcony, you may get annoyed by the noise from passing cars and scooters.
The bathroom is also small (no problem here if you use it one at a time), but it can be unhandy if you want to share it with someone else.
Communication with Alexandra was always easy and she gave us all the information we needed and even more than we had asked for.
We really enjoyed our time in Tessaloniki.