We booked this hotel as a package in Dallas. At the time, the anti-French feelings were going on, so we got it much cheaper than the advertised price. We booked out flight and hotel in Dallas.
It wasn't an all-inclusive, but you might be able to book it as that. We just got the breakfast, which suits us better. We had just heard how great all the restaurants were in Grand Case, and so we wanted the chance to experience them ourselves.
The Grand Case Beach Club was great. The staff was very outgoing and friendly; in fact, many an evening they would just hand us bottles of homemade rum if we were hanging out at the bar and never charge us. They were quite proud of the local liquor!! Our room was on the lower floor, with a lantern-lit patio and sliding door into the gardens, TV, telephone, fridge, safe, oven, big bathroom, huge bedroom, and pretty Caribbean decor. There was a pool and lit tennis courts. The property was gated, but you didn't feel like it needed to be, as everywhere felt very safe.
The bar/breakfast room was open air and on the rocks between two very pretty beaches, and we enjoyed this every morning, along with the four local kittens for company. There were hammocks in the gardens under the shade of the trees that made for a very relaxing afternoon. Some trips were organized by the hotel, but we only did one to Prickly Pear, and for the rest of our adventures, we went into Marigot by bus and took the ferries or buses to save money.
For more info on the hotel, click here.