A lovely area to explore. Can be nasty on windy days around El Torcal.
Try extending the start point north to Teba fortress where you can ride up the really steep access road and get the bikes onto the grassy plateau below the Moorish tower. (OK for BMW GS, maybe not suitable for Wings or sprots bikes)
El Chorro is famous for its gorge, not visible from the road. Area has plesant views and road along edge of lakes and across top of dam.
Heading East toward El Torcal (national park) is some quite small and rural roads but its worth it to get to El Torcal which is really intersting and even if youve only got 30mins can have an interesting walk around there, there is an information centre at top of road, and even if you cannot stop for long its worth driving up the road just for views.
Road down Villanueva de la Concepcion is good fun with quite a lot of bends.