Partner and I are planning our first trip to Spain in October. We originally planned on flying to Barcelona--train to Madrid--train to Sevilla, stay for 3 days, then rent a car, day trip through Arcos and Ronda and stay in Nerja for a few days (beach time) then driving to Granada and dropping the car off before spending 3 days there (then taking the train back to Madrid before flying home). We have 3 weeks for the entire trip.
Now we are considering spending 2+ weeks seeing the bigger sites in Barcelona, Madrid, Sevilla, and Granada....but then spending the rest of our trip in Paris and skipping Arcos, Ronda, Nerja. The original appeal to get a car and spend more time in the south was to see some smaller towns and slowwww down, but now I'm not sure renting a car and seeing these smaller sites are going to be worth it. Additionally, I have never been to France but my partner spent some vacation time there last summer.
Would appreciate some advice!