The Same kind of turist that visit Mexico City, Bogota or any other city in the world, there is a very big group of people that do not want to come and burn in the Sun, that is intrested in Culture - Colonial Zone first city build by european in America, ton of restaurants, etc., that kind of people that love the city is the one will stay in those hotels and also business people too.
culture is hard to find in Santo Domingo, except for the ZC. But than it's better to stay in ZC or Malecon.