I know that most people get off the plane at Girona and head straight for Barcelona. However, if you are looking for somewhere that's not so busy for a couple of days, consider Girona. I really like it along the riverside with the painted houses. There are several museums, the medieval part of the city and a great choice of restaurants where you can have a set 3 course meal for around 12 euros.
I have some accommodation suggestions at:
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