We had a very good stay at Christos' place, he welcomed us personally when we arrived and explained everything to us. It's one room in an apartment with other rooms to rent, we didn't have any problems with the other guests. It's well located, there's a metro (right at the centre of the city) two streets away and a train station not far away. We didn't have any problem in this neighborhood. We highly recommend this place, we even told our friends about it :) thank you Christos!