Maria and her father were excellent hosts and very warm people!
The location couldn't be better.
You'll be on the oldest street in Athens so make sure to tailor your expectations accordingly. The condo itself is not updated. The climate control is limited to a box fan on the first floor. The upper floor has an AC unit and another fan, but it didn't seem to make much difference in the 90F weather. Athens cools of plenty at night though so sleeping was ok.
If you just need a home base to come back to in the summer while spending your days outside of the condo sightseeing, this is a great spot for you!