Konstantinos' place is lovely. Although it is an older building, the apartment is newly renovated with modern kitchen, bathroom and furnishings and very comfortable bedding. It is in a great central location.. we were able to walk everywhere from there as well as be near buses. Nice little plaza across the street with many taverns. Konstantinos responded quickly to messages and was flexible with check in time (as well as meeting my local friend to give her the her the keys as we were arriving late. Would definitely recommend this place as a comfortable and convenient way to see Thessaloniki. .