Apostolos is a great host, very welcoming . He had been waiting for me outside the flat when I arrived and then spent at least 30 mn pointing out to me on a map all the unmissable spots or areas of interest in Athens. His flat is really clean and comfortable and is perfectly located very close to the foot of the Aeropagus hill in Plaka. The view from the rooftop onto the Acropolis is gorgeous. Highly recommended.