A really spacious flat, spotlessly clean and close to everything. We are a family with a toddler and a baby, and the space in the flat and the fact that we could cook evening meals in a well utensiled kitchen and eat it in the garden earlier than Greeks would traditionally eat meant the whole trip was less stressful.
The flat is really well located with a mini market across the street and walking distance to all the major sites - only a 8-minute walk to the Acropolis entrance (although you can see the Parthenon within 3 minutes) and the Temple of Zeus, 10-15 minutes to Syntagma Square, and 20 minutes to the Ancient Agora. Plaka is only 10 minutes away (for those who want a classic tourist area with lots of restaurants), and the Acropoli Metro station about the same.
Harry was an excellent host, responding to messages quickly, arranging competitively priced taxis to and from the apartment, and generally being friendly and helpful.
The only sadness was I couldn't get the AV equipment to work despite following the instructions, and we weren't sure whether there was recycling so started to gather a small pile of recyclables in the corner - but these are very, very minor points on what was an excellent stay at a great place. I would definitely recommend.