I can recomend one hotel( the only one I stayed at in SD, but it was nice.
The HODELPA CARIBE COLONIAL
Isabel La Catolica 159 Cuidad Colonial Santo Domingo
tel# 809 688-7799
the room was nice the hotel is nice . Not huge but not too small. Close to the end of the Conde. cost 2785rd for a single for one person( my GF mother) I have the reciept for that room in my hand right now. The room for my gf and me was the same size, but they charged just a little more , because there were two of us in the room. I dont remember the price. Of course she ate the mini bar to pieces and that ran the bill up an additional 1871!!!!!! ha ha ha ha.....oh well... thats the price for dragging her mom around with us!
good luck...bob