Yes. Two weeks there will be too long. The city has a beach, and if you are content to spend lots of time on the beach, you may be happy there for 2 weeks. We were in Barcelona for 3 days, and we saw all of the major sights in that amount of time.
How long should I plan for a trip to Spain and Portugal?
How many days do you need in Spain and Portugal? Although you could easily stay for a month, you will need at least 14 days to explore Spain and Portugal to give you enough time to see a couple of the big cities and a few smaller towns as well, without feeling too rushed.