Konstantinos' place is lovely -- bright, clean, and in a great neighborhood. Excellent wi-fi, everything necessary was provided, and the apartment is very well-situated in Athens (via metro and on foot to get to the centre, or anywhere else). He is a very welcoming and helpful host, extremely quick to reply to messages, and went out of his way to make sure I felt welcome and had what I needed. I would be delighted to stay here again, and would not hesitate to recommend this place to other visitors to Athens. Thank you, Konstantinos, for your great apartment and for all of your help!