We enjoyed our stay here very much. The house is very old and full of history - almost a museum - but has been very well refurbished. It is very well located - 10 minutes walk to the Acropolis and to just every other site as well. You do need to be fit, though - a lot of steps (inside and out!) and hills to climb!
The welcome is warm and helpful (Ioustinos will recommend some great restaurants nearby) and the place is clean and well-equipped.
You really won't need a car to get around but if you do have one, there are several 24 hour car parks within 10 minutes walk; do not be tempted to park outside the house since the neighbours are very protective of their residents' parking!