Malaga, Spain or Dubrovnik, Croatia

Hi! I am already going to Nice, France, Edinburgh, and have been to Florence and Venice in Italy. I am hoping for something that is different in vibe from the others. I have 2-3 days off to travel. For Malaga, I’d probably do a day-trip out to either Granada or Seville. I would also be a solo female traveler. Which one would everyone recommend?