The 'Hill of the Muses' is located at the south-west of Acropolis. Take a stroll to the top and you will be rewarded with a great view of the sacred site. Several picnic spots are located along the way and the Monument of Filopappus is worth seeing.
Wikipedia https://en.wikipedia.org/wiki/Philopappou
Address (Unnamed Road), Αθήνα 11851, Greece
Coordinates 37°58'3.231" N 23°43'19.649" E