First off, it's hot. But it's not actually that hot, certainly more livable at this moment than Bakersfield, Dallas, Biloxi or Atlanta. And Valencians don't have the phobia about air conditioning that infects most French. Not only is our AirBnB air conditioned, but so are most restaurants and stores. They're not, granted, usually set to Antarctic temperatures as in most of the USA, but it's very comfy pretty much everywhere indoors. Plus the humidity isn't oppressive, and there's almost always a nice breeze.
Just saying: don't discount the idea that coastal Spain might be a better place to spend a couple of summer weeks than you might have thought. It's not flooded with Americans or Brits right now, which many will regard as a positive.