we were in the domincan republic last summer although we were on the north of the island. Had a fab time. best value holiday.
if you've never been on a sun holiday before just plan plenty of trips to go on so you won't get bored lying by the pool. we went to
paradise island. it was gorgeous and some deadly snorkelling in crystal clear water. also went to and did the dolphin swim - one of the best things i've ever done! not sure how far it is from santo domingo but if you want can root out some more info and let you know,