not comfortable log-cabins as posted

Hi, I stayed here twice and both times I was given a cement cabin set away from the rest of the resort and told the log cabins were not available for timeshare exchanges. The cement cabin was in rough shape, uncomfortable and a real disappointment. Does anyone know if it is correct, that the nice log cabins are not, in fact, available for timeshare exchanges? I would really like to stay there again as it is a beautiful place but not if it is to stay in cabins set aside from the rest of the resort. thanks