Casperjj, Antiparos gets <i>very</i> busy in August, so be prepared if you visit at that time. The one time I was on Antiparos in the middle of August the pedestrian main street looked like Oia on Santorini when the cruise ships are in.

July is better, so try to time your visit for then. If you go in July you may be surprised to find the island filled with Norwegians, very nice people who speak excellent English.