Looks like there were a couple of exchanges earlier in the year.
One of the "features" of the DAE web site is that if you do a search for a date in the past you see all exchanges that were matched. e.g. if you do a search on "Spain, March, 2008" and look down the returned list of exchanges you will see that there was an exchange at this resort on the 8th March. I had a quick look and also found one in Feb.
Gold member can requesting an area e.g "Costa del Sol". Guess you could put the specific resort in the Special Requirements field.