My overall stay at this property was fair but I will not be returning. When I arrived at the hotel, I realized that part of my family was staying at the Guanacaste property, and they wanted to stay with the rest of our family at the Palace property. Thannya (identified as a Supervisor) was working at the front desk and told me all we would have to do is cancel our reservation at Guanacaste and she would provide an equivalent room at Palace. Once we returned after canceling our other reservation at Guanacaste, she told us that we would also need to pay a large additional cost to do the transfer. The fact that this information was not provided to us prior to canceling our original reservation is wildly unprofessional. When I told my concerns to Thannya she was extremely rude and told me that “I was wasting her time”. Additionally, the new room at Palace was disgusting - it was not cleaned properly, there was mold and the refrigerator did not work (I have photos). This was unsettling because my mother is elderly, has diabetes and needed to refrigerate her insulin. Even though I will not be returning to RIU resorts in the future, there were a few staff members that were actually very helpful and provided great customer service throughout our stay and I would like to acknowledge them: Maury (bellman), Sharon (front desk), Elmer (front desk), Alonso (cook) and Warren (pool bartender).