This is a great place to stay in a charming part of the center of Athens. The location is such that you can walk to all major sites, which is indeed something we enjoyed doing. That said, the street where the place is located gets a lot of pedestrian tourist traffic, so might be noisy in the highest season, e.g. July and August. The house is fairly well insulated from the noise, so I don't think it's a problem the rest of the year. There are three bedrooms, of which one is on the inner courtyard, which is really very quiet. So if you are only using one or two of the bedrooms, you can avoid the (lovely) one which however faces the street, if you noise sensitive.
Anna is a great host. Always ready to give a quick response to questions, but never obtrusive. I arrived early in the morning and she made the effort to get the cleaning staff to clean up one bedroom first so I could sleep and rest after a middle-of-the-night flight. I really appreciated that extra effort!
A word about sleeping arrangements. There are three double bedrooms. One has a queen mattress, en suite bathroom with shower, and is on the inner courtyard. Another with double mattress is on the street side (see above), and has a bathroom (shower) which is shared with the third bedroom (2 twin beds). The twin-bed bedroom does not have a window to the outside world and is quite basic. This would be most suitable for children or two young people- it's not super-comfy, but fine. There is also sleeping space in the attic room upstairs, which is very charming, but which requires walking through the second bedroom.
The kitchen is nice and well-equipped, though we had trouble making decent coffee. That said, with all the lovely caffes around, it was not a big problem, and differences in coffee preferences are huge. There was an espresso machine and a drip maker, but the latter was not top quality, so there was a bit of dripping. But these are really petty issues and are more than compensated for by the great location, charming feel of the place, great host, and generally nice atmosphere of the place.
I would definitely go back!