We stayed for two nights at Konstantinos's place. The apartment looks exactly as it does in the pictures and is spotlessly clean. The location is great, just a few moments walk from lots of places to eat and drink. Even though you are in the middle of a busy part of town, we barely heard any noise at all. Konstantinos is really easy to communicate with and responded quickly to any questions we had. We didn't meet in person as he was on holiday but his friend Maria was there to greet us and show us around the apartment. We would definitely stay again if we come back to Thessoliniki.