Natasa's place was my home for four nights. Apartment is located close to railway station and one of the main roads with public transport access. Noise of the big city traffic is not a problem as apartment is looking to the back of the building (South). Bigger problem are loud neighbors but I guess nothing can be done there :-)
Natasa was waiting for my arrival and let me into clean apartment, explained a few formalities and offered a help at any time (not needed, but appreciated). As I was leaving very early, we did not met this morning.
All in all, I think that Natasa place is a good value for a money. It is 10min walk from Ladadika (restaurants and bars area), few minutes more to Thessaloniki Promenade and a very convenient point for city exploration.