I can't recall when CSR had its most recent room refurbs. I was there last October, in Cabanas 8A. Room was fine to me. Didn't look brand-spanking new, but no mold or mildew. I enjoyed it so much, DH and I return next week for a long weekend trip.
I wouldn't panic over one posting; I bet you could find a similar room in any large resort area (WDW and elsewhere) that had not been refurbed within the last couple months. If you should be unlucky enough to get such a room, go back to the front desk and ask to be moved. In most circumstances, I believe the CM would assign you another room. (Especially if you had pictures of the mildew to share. . .)