Teo let us do early check in when we were desperate to just get our kids to sleep after a long flight. The apartment was clean and well-appointed. The location is great, it's literally on top of an open air market, about 10 min from syntagma, 20 min walk from acropolis, within 5 mins you can be at the roman agora and numerous delicious coffee shops and restaurants. It's a really great location. My only complaint is that the beds/pillows aren't super comfy.