I wouldn't count on "Guides located there" -- in some countries & in parts of Greece, licensed guides do stand around entry & solicit business on per-head basis, but very "iffy" around Acropolis. When ...

Father/son to Athens in June for first time. Do you recommend using a private guide or a good guidebook to tour the Agora and Acropolis? We want a good overview but not something too intense. If ...