My friends live in Italy but they're (very wisely) in Edinburgh at the moment.
I don't mind high temperatures unless they're accompanied by humidity. I was in Madrid in August a few years ago, where temperatures peaked at 38C each day, and I loved it because it was dry heat. (Cafés and bars all had misting devices on their terraces, trying to increase the amount of moisture in the air). I then returned to the UK, where the temperature was only 26C but with high humidity, and absolutely hated it.