Konstantinos’ place was great. The location is 10/10. You can easily walk to all the major sights. There are also lots of great restaurants and cafes near by. The air conditioning works well too which was very important with how hot Athens is right now. The only things I would mention are the room faces a bunch of hotel windows so your a bit on display when the curtains are open as there are no sheer ones for privacy. The sound also seems to carry a bit in the hall ways so it can be a little loud when people are chatting. Overall I would definitely recommend this place.