I totally agreed. Los Cacicazgos is one of the best neighbourhoods in Santo Domingo. Quiet, elegant houses and beautiful buildings. Good public services (very few apagones!), close to the Mirador park, it's a wonderful location.I'm been living here for 10 years and I love it!
Another one is Serralles (close to Pedro Henriquez Ure?a Av. and Mexico Av.), exclusive, elegant and quiet too ( even know is located in the center of the city)