Trpanj, Peljesac, Croatia:
The year-round vacation houses are in Trpanj at Peljesac Peninsula.
From all points, by land or air to any airport in Croatia, except Dubrovnik, your destination should be the Port of Ploce Croatia. From Ploce you would take the ferry to Trpanj.
To find out the sailing schedule please check the Jadrolinija page at http://www.jadrolinija.hr/en/home?dpid=1208
From Dubrovnik, you would head toward Ston, the entrance of Peljesac, and then to Trpanj (about 120 km from Dubrovnik to Trpanj).