Stefan&Kleio - and most specifically Kleio- made it incredibly easy for me (a girl travelling alone) to safely discover and enjoy Athens. The place was spotless, easy to find and access and is located mere minutes away from the News Kosmos metro station. I had a lot of fun visiting the city and loved to be able to get 'home' at the end of the day. 10/10 would recommend and would come back at Stefan&Kleio's place.