We stayed in Grand Case a couple of times. Last week we stayed in Orient Bay Village. It was great. Although the GCBC is nice and has onsite amenities we always found ourselves on Orient Beach everyday.
The days last week consisted of beach, lunch, HH, more lazing, walk to Bikini for late afternoon rose, home, shower, and walk less than a block to great restaurants, home. Sleep repeat.
If that sounds like your agenda then check out sochicvillas.com. Owners are great. Picked us up at airport and had a car available for us if we needed it. One morning we drove the island to look at all the areas and places to stay that are mentioned here. To each their own but we have found our place for years to come.