This house is in a perfect location. In the Plaka, but "street" (steps, actually) is quiet. And you are literally right up against the side of the Acropolis, even if seeing it is possible only if you crane your neck from one patio. But truly, everything is walkable from here--from the Acropolis Museum to Syntagma Square.
We never met Dionysia, as she was out of town on holiday. We were greeted, instead, by two very friendly housekeepers . But Dionysia followed up very quickly with a call and extensive emails full of advice on restaurants, etc as well as important details on the house.
House set up is a little odd, with kitchen, one bedroom and dining area on first floor, with master bedroom, living area and terrace upstairs. Living area quite comfortable, though the air conditioning in the bedroom (located upstairs in the loft) couldn't keep up with the August heat.
Kitchen has everything you need and the housekeepers left bread, juice and fruit for us. That said, space is small and crammed so even preparing breakfast was a challenge. This is not a spot for those who want to do much cooking--but with so many lovely restaurants around, that was hardly a problem.
All in all, a lovely visit.