First of all I want to thank Makis for answering my endless questions in patience.
This well decorated house is located in the center of Thessaloniki, very close by to sea, cafes, restaurant, clubs and touristic attractions. Area is really secure. It can be a little noisy in the night, but windows cut the noise easily. We stayed 4 people in the flat and because it was really big, we did not feel like claustrophobic.
Kitchen is well equipped, cooking can be done. The balcony is much more bigger than the photos, with a perfect view. Living room is huge, and one of the beds is there, the other bed is in a room, and in the room there's a closet full of extra sheets, towels etc.
Makis arranged everything before we came, and even we wanted to check in at a very late time, he confirmed and let us to get the keys from a store, which is just 2 minutes walk away from the house.
He prepared a 2 paged "how to do / what to do" list for visitors which was very helpful.
This house will be "our place" during our visits to Thessaloniki.