Lived in the capital for a long time, looked at places in Csta Verde myself a few years ago. Once entered it is a little like a mediteranian retreat without life. To enter you have to pass the roughest part of the city, a stretch of 50 mtrs with gomeros and pirates, it's frinkin aweful. Even once in, it is not nice, costa verde is misleading. A run down amuzment park on the corner, never been opened for 20 years. Costa Verde was dying 3 years ago, I suspect is now simply a no go zone for those looking for a nice life.
Herrera, great location if Dominican and looking for work. Also close to the park, but very picky, each streets are chalk and cheese, the lions in with the rats. I'd not live there, too far out, for me anyway.
I've actually looked everywhere you are over the years, and you really can't judge this city remotely as you can elsewhere, to any extent. You need to see the street. In the city, I lived in a wonderful street in a central barrio, but once out if my street it was aweful.
Entire areas of niceness simply do not exist in the city, like I said, the rats are mixed with the lions divided only by streets.
If I can be of any help let me know, but you can't do this remotely from afar, you need to be here.
gud luck, seems like you intend on moving quite a lot lately, hope all stays well for you and yours.