If you will be attending the rowing events, probably this would be a good place to stay, given the location. Expect the bare basics, but I would think it would be clean, as it should get some traffic from domestic travelers. It is located in a popular road parador. I have eaten at the restaurant there and it is good. If rooms are still available, grab them while you can. Elsewise, there are the places in Jarabacoa, but they are about one hour from the Rincon Dam. Jacaranda is 14 kilometeres from Rincon Dam site.