Ioanna's apartment is right in the middle of Thessaloniki touristic center, with a historical site (old palace ruins ) literally in front of the porch
In the evenings and nights there are loud groups of people hanging out on in the piazza below, however when the porch door is closed shut the acoustic isolation is good and there's no noise inside the apartment.
We didn't see Ioanna during the visit, however the instructions for entering and leaving the apartment were clear and Ioanna was available whenever we needed.