Georgius is a great host, very reliable, helpful and kind. The location of the apartment is excellent, in the city center, 50 m from Egnatia street. Nevertheless, it is quiet at night and surrounding is absolutely safe. The apartment is VERY clean and nice - it is small, but has everything you need and is very well organized, so we felt very relaxed and comfortable all the time. It has great balcony, where we enjoyed coffees at mornings and evenings.
If we come to Thessaloniki again, we would come to the same apartment, so we strongly reccomand it. :)