I had a great long stay at Stella and Nico's place. The location was very convenient for walking Plaka, Syntagma Square, Monastiraki, around the acropolis, Filopappou Hill, and much more. There is also public transportation nearby if you want to get to neighborhoods further out of the center, or you can always find a taxi in Athens too.
The apartment was well equipped with different types of coffee makers, extra linens, pots, pans, plates, utensils, etc., and the washing machine and A/C both worked great. The view of the acropolis, sun on the open outdoor patio, and jacuzzi were all great as well. I highly recommend this apartment. The hosts are absolutely wonderful!