We just returned and stayed a couple miles north of the cut. Had the parents tagging along, so it was about the opposite of a honeymoon:)
We had checked out some of the resorts further north, and before going thought it would be too isolated. After being there my wife and I both agreed that we would be staying even further away from town next time. Azul and Mata Chica are really chic, cool places with great restaurant and they are right beside each other. Rojo's at Azul is the best restaurant on the island. Cannot go wrong with any of your choices but I would pick Azul or Mata Chica if AC was my honeymoon destination.