Me and my friends stayed at Vassilis place for 2 nights.
The place was very clean and Vasilis had even bought breakfast and food supplies from the most delicious bakery in town. He was also very flexible with our check out time and parking spot.
The bathrooms faced low water pressure issue, thus we had to use only one shower at a time and this was a bit time consuming.
Vasilis and Michalis (the 2nd property manager) were very responsive to the issue and visited the place to check on it, however we somehow got the feeling they wanted to check on us as well…
Anyway, all in all the place is nice & big, with a great view. The location is very central and convenient for a short (or long) stay in Athens.