We did not like this area of Athens at all. Two hours of being pestered by peddlers trying to sell us useless trashy souvenirs ruined our visit to Athens.
We also ate in one of the restaurants who were pleasant enough until we said we didn't drink wine and wanted only water or juice with our meal after which we were ignored. The food was also very average.
We weren't aware that the Plaka was full of nothing but tourist traps when we went there and if we had been we would have avoided it.