Punta Cana region is fine with the Bavaro Beach main tourist area to the north. Not a lot going on outside of the All Inclusive resorts but an excellent base for some R and R. Beaches are spledid with Robinson Crusoe-esque walks to be had along mile after mile of powdered white sand. We stayed at the Grand Paladium palace resort and spa.
There are some cool trips if your going stir crazy and we enjoyed a trip in country on monster trucks to the river where they filmed Apocalpse Now. You get to see the plantations were the Haitian's work and the surrounding countryside is a sight to behold being greener than green. I heard say that they filmed Jurasic Park here. You'll enjoy it.