Me and my girlfriend had a great stay at Efi and Anna's place. The apartment has everything that is needed, you most likely won't have to buy anything even if you stay there more than a weekend (essentials for cooking / laundry). We also worked there and never had a problem with the wifi connection! Fantastic location for the Acropolis and the Acropolis museum, right in front of the metro stop and the pedestrian-only street downstairs also offers plenty of options for coffee and food! A must-stay!