Kalliopi's apartment was excellent - a lovely little space in a street surrounded by really nice bars and restaurants. Kalliopi (and Agape) were very welcoming, the house was very well equipped and comfortable with lots of very nice little touches. There was excellent AC in the bedroom. I know a tiny bit of Greek, but we had no problem at all communicating with Kalliopi about all the essential stuff. Will be my first choice when I go back to Thessaloniki :)