This place is just fantastic. Haris was incredibly friendly and helpful, meeting us at check in and welcoming us with wine and home-made cake which is how all holidays should start. He then took us up onto the roof and showed us the sights of Athens from a bird's eye view. His love for and pride in his city really shone through! And the directions to the Acropolis and various other sites and museums were incredibly helpful. He even let us use the barbecue on the roof to cook dinners which allowed us to make the best of that phenomenal view.
The only negative was the cinema next door, which ran until 2am every morning playing - the horror - Despicable Me 3. It's completely fine if you're a couple as you can sleep in the far bedroom, but if there are four of you two of you had better be very sound sleepers (or willing to stay out partying till the small hours every night...)
Even so, I cannot recommend this apartment highly enough. It's so brilliantly convenient for the Acropolis and the Acropolis museum, the ancient Agora, the Pynx (a v quick trip but excellent) and the bars and restaurants of Plaka.
One last tip: book a trip when a full moon is due. Sitting on the terrace watching the full moon rise behind the Acropolis was the highlight of our holiday. It was magical.