If you're looking for remote, Captain Morgan's is it for sure.
My husband and I just returned from AC two days ago after spending 16 fabulous nights on the island. We stayed at Ramons, which honestly is extremely overpriced in comparison to other accomodations. The only way we could travel up to Captain Morgan's to check it out was either by water taxi or golf cart, which by the way is out of the question if it's been raining as the road is less than a trail. This was also our first trip to AC and here is my advice. If you want to stay somewhere secluded, book at Captain Morgan's for a couple of days max, then move on over to The Palms, which is next door to Ramon's. They're beautiful condo's with full amenities, check them out at http://belizepalms.com/.
You'll be a short walk from San Pedro and a good variety of restaurants, dive shops and bars. The bonus is that Ramon's has one of the nicest beaches on the island and you'll be able to share it with their guests. We prepaid our entire trip and had we not have, we would have moved out of Ramon's in a very short period of time. With the cost of meals on the island, it would have been nice to have our own kitchen. Also Ramon's has no bath tubs, TV's or clock radio's as I believe is the case at Captain Morgan's. If your visit is 7 days or less, this may not be an issue, but during the course of 16 nights one or all of these would have been a nice luxury.
In the next couple of days I'll be posting a review of our entire vacation and experience on the island, check it out, there are many things I can't wait to share with all those interested in visiting AC.