On vacation to attend Seabreeze Jazz Festival, May 25-28. Received a call from front desk personnel to upgrade room while driving from North Carolina with room with stove, refrigerator and sink. Room 515. The end corner was recommended. Our arrival time to the hotel was close to midnight central standard time. My daughter and I became excited to receive an upgrade. The excitement ended upon opening the door and entering the room with an overwhelming strong musky and mildew smell. Which took my breath away. I immediately opened the door to the balcony for a flow of air to flow through the room with the front door propped open. The fan was turned on. The bathroom vent was turned. Air fresher and body sprayed was sprayed all over the entire room. I had to sit on the balcony to breathe after our 10 hour drive from North Carolina. I do want to point out the room was CLEAN. I had to wear a mask to remain in the room and breathe without gagging breathing the musky and mildew smell. The next day my daughter went to the office to inform the office personnel of the smell we had to endure. To make a long story short: from the manager informed us someone was going to check to room for the smell while we were out eating lunch. From the discussion of the smell after our return, the smell was due to the air conditioner turned off and the hotel location near the beach was the reason for the smell. We were told upon our return if the smell was still in the room, we would transferred to another room. Due to the festival’s time schedule we did not have the time to wait for an hour for another room be cleaned and prepared to switch and move all our personal items to be moved. My daughter was told once we returned from the festival our new room would be available. This did not happen. We returned from the festival after the last musical guest after 11:00. The late night desk personnel had no knowledge of what we were told earlier before we left for the festival. There were no notes to share with her from the manager, to inform her of the room we were promised to receive upon our return from the festival. We stood in office and was told “there are not any other rooms available to move to”. The entire hotel was full. The night personnel did suggest to remove the filters from the air conditioners. There is air conditioner near the door and the bed. The other is the area where the table and chairs near the window. We removed the filters. I discovered the air conditioner near the first bed was the overwhelming smell we both endured the entire time from Wednesday night to Monday morning. Due to Seabreeze festival’s itinerary, we were out all day until our return late after 10:30 p.m. The notion of the room location being near the beach has no significance to our experience. We have been to Myrtle Beach near the beach. Our room was clean and we did not endure what we experienced at The Flamingo Hotel and Tower. The smell as I said was definitely from their “front vent”. The