I stayed at Stelios' appartment during 3 months because I had to be in Thessaloniki for work. Literally everything you'll need is present! Washing machine, fridge + freezer, airconditioning and heating, multiple sets of towels, bed linen, all information about the city,... The appartment is located very conveniently. If you don't mind walking (which is very agreeable in Thessaloniki), everything is reachable by foot. Stelios himself is a very friendly and helpful person who didn't neglect to check on me multiple times during my stay. I highly recommend his place!