I spent a week at Konstantinos' apartment which is located next to the Roman Forum (Romaiki Agora), to Panagia of Chalkeon Church and Mpit Mpazar - in other words 10 minutes walk from any point in the historical centre practically, from the sea front, the majority of the important sight seeing areas, restaurants (Nama, Extravaganza, Maitre & Margarita), bars (Gorila & Cin Cin), cafes and supermarkets (Masoutis at 5 min walk) and all other amenities.
My communication with Konstrantinos was very easy and he replied to all my queries on time and he was accommodating with my arrival time even when I had a massive delay with my flight.
The flat has been recently renovated really tastefully with slick, clean lines, comfortable beds and it is fully equipped to have any guests.
This was my fist visit to Thessaloniki and it made a huge difference to stay in such a comfortable and modern apartment.
Should I return to the city and the place is available I will not hesitate to book again Konstantinos' apartment.