V friendly tower ops at Sabadell (Barcelona). Temp in August '98 was +44 centigrade on the ground!!! Go for the Best Western hotel at the end of the Ramblas. Cheap, huge rooms with aircon. Taxis also cheap and modern undergound system v impressive.
If you get the chance, visit Carcassonne. The airfield owner also runs the flying club and hotel at the airport and will arrange taxis to town. (I don't THINK he owns them too!) Caracassonne is a delightful double walled Medieval town rebuilt 100 odd years ago. Many, many restaurants.
Watch the Mistral down the Rhone valley, it blows north in summer.