you could try l'Esplanade, le petit's sister hotel. it isn't right on the beach, but is only a short distance away. It has a very romantic setting.

Another option is Grand Case Beach Club. While it is bigger than the other hotels in the area - it doesn't feel that way even when it is crowded. They have a great restaurant - Sunset Cafe which is a fabulous spot to have dinner (or lunch) and Grand Case restuarants are a short walk away. The hotel is reasonably priced too. The one drawback - is that the pool is tiny, but since they have a good beach - you may not need the pool.