We have a couple of extra days in our itinerary, and I was looking at Ronda, Arcos de la Frontera and Nerja, as recommended by Rick in his itinerary. All look interesting, and I think a day trip to Nerja to see the caves would be possible from our stay in Granada. After leaving Granada, what is the best way to get around to Ronda and Arcos de la Frontera? I'd be trying to go to those places, and then up to Cordoba, and Seville. Basically, are Ronda and Arcos de la Frontera worth the trips? Is train travel, the bus, or a car rental best for this, if we choose to do it? Thanks for any input.
Also, is it possible to rent a car in Granada (and drop it off in, say, Cordoba?).