Sevilla has a lot of tourists, but Barcelona has a huge number compared to Sevilla. Barcelona is very much at risk at becoming the next Venice if city planners do not address this issue. Sevilla is better because it has fewer cruises. read more
But I think it will suit better what you said on your original question. More relaxing, with excellent food, maybe not as much shopping than in Barcelona (but definitely more than you can handle in a weekend!) and much more than a little culture (again, less than Barcelona but OK for what you can handle in a weekend). read more