Polyvia’s apartment is very nice, clean and on a good location.
My boyfriend and I stayed there for four days and had a wonderful time. The apartment is just the right size for two people, modern, has a nice clean bathroom and is equipped with everything you need for a short stay.
Regarding the location, it takes about 15 minutes or less to get to Sintagma Square or Acropolis by foot and National Garden is just around the corner. A small neighbourhood place sells great gyros and a couple of minutes away there is a nice vegan restaurant.
Polyvia is very nice and responsive, always there to help her guests.
We would definitely recommend this place 10/10 for anyone visiting Athens.