We stayed at Sports recently and they were undergoing a refurb. We overheard a 'manager' type guy explaining to another guest the way the refurbs work.
What he said was .. every 6 years they replace all the soft goods in the rooms, bedding, carpets, drapes and do minor touch ups and repairs and replace anything in obvious need.
Every 12 years is generally a full stylistic re-do of the room. These are the re-do's where they change out the sink/counters, redo the bathroom tiles & grouting, replacing consumer facing plumbing fixtures, and replace all furniture.
Currently ASSports was in the middle of what seemed to be the 2nd type of refurb.