Excellent. From the moment I booked my stay until I left, Romanos and Athina were prompt, welcoming and thorough in their responses.
The flat is perfect: bed comfortable, quiet, small kitchen (with everything you may need) and a nice shower. They have thought of everything, even down to dishwashing liquid!.
The location is great, quick access to 2 metro hubs (Syntagma and Monastiraki) and walking distance to many museums, Plaka and the Acropolis. Would stay here again when in Athens.