Rental cars in Jimena de la Frontera

We will be spending the month of September in Jimena de la Frontera. I was planning to get a rental car car at the Malaga airport and then drive to the village. My options then are to 1) keep the car for the entire month or 2) take the car back to Malaga after a week or so and then make other arrangements while we're in Jimena. The problem is that their will be many days in Jimena when we won't need a car (for day trips etc.). So, that's why I'm wondering if option 2 is viable. Is it possible to rent a car for a few days at a time when in Jimena itself (looking at the Web there don't seem to be any agencies there). I also have the problem of getting back from Malaga when dropping off the rental car (buses? train?). Any suggestions as to the best way to approach this would be welcome! Thanks.