Had a week in El Medano last year, in February. It is a small quiet town, not full of tourist type shops. Just a couple of miles south of the airport, so dont bother with a transfer, just jump in a taxi. Plenty bars and restuarants along the promenade. It is south facing so you wont get blasted by the predominantly northern winds. It is the winter training ground for the professional windsurfers from xmas until the end of march. Most roads leaving the town centre all seem to have steepish hills, just something you should be aware of .. we will certainly go back again.