Living in DR is like living in most places, meaning it is what you make of it. Totally up to you and what you want in your life. I have had the privilege of living in DR for four years now, first in Sosua for a year in a couple of different condos, and now I have lived in Gazcue which is in Santo Domingo, and I have a second rental in Boca Chica been there only about a month.
I have been somewhat fortunate in that I am retired and receive a State pension from NY. I personally have no intention of every returning to the States, I enjoy my life here and the people I have had the pleasure to meet. I prefer living in Santo Domingo because I like the amenities in a big city, I find for the most part I have everything I want here just as I had in the US, except ocasional power outages, which if you are in a good area such as Gazcue they don't occur that often. The supermarkets I shop in are La Cadena, Nacional and I also go to Price Smart which is like a Price Club in the US. I find most things I desire in these stores. Although they are higher in price than comparable supermarkets in the US. In my apt. in Gazcue I have satellite tv, and in BC I have the local cable, never a problem with either one.
Gazcue is a residential community and in my area it is pretty safe, but I am still close enough to anything else I want, Colonial Zone, attractions on the Malecon, and the business districts and their different clubs and restaurants. You can get a very nice apt with all the amenities in an area such as Gazcue for about $500 US more or less depending on your taste. In BC I live in an area called los cocitos (sp) which is the BC barrio (just west of downtown BC), got a small one bedroom there and pay only 8,000 pesos a month about $200 US a month, I am two blocks from the beach. I am very comfortable there as well and in many respects enjoy my time there more than when in the capital. I enjoy interacting with Dominicans, although my spainish is not perfect every day it gets a little bit better. In the short time I have been there I have made it a point to get to know my neighbors in that barrio, as well as in Gazcue. Where ever you live I think it is good advice not to isolate yourself, and get to know your neighborhood as well as your neighbors, it makes for in my opinon a better and safer way of living your life.
I am sorry for being so long winded but, I hope this post aides you with your question.