"When we arrived and went up to check in our room (627), there had been a HVAC unit at the end of the hallway that leaked onto the carpet. A staff member was shampooing the carpet, vacuuming and had a large fan sitting out. The smell was horrible. We went in our room and the smell seemed to be limited to the hallway. However, during the middle of the night, we did wake up and the smell was coming into the room. When we went to check out, I asked about the situation and what was happening. The staff member explained the situation to me and said she wasn't aware of the issue until she came in that day and that the rooms were going to be closed off now (after we checked out). So they wouldn't put anyone else on the 6th floor until it was resolved. No offers to reimburse or any points or anything. Only her apologies. I wouldn't stay here again simply due to the fact that they KNEW about this situation before we checked in and still put it in the room right beside the issue. Idiots. Marriott -- do better !!"