<p>Yes, Salamanca supports 3G. I also carry my iphone, put it on airplane mode with wifi on so if I happen to be in a cafe with free internet, I can make calls to the US using skype and surf the internet. Usually, I leave the Ipad at the hotel.
We stayed at the Catalonia Plaza Mayor Salamanca. It’s clean, free internet and walking distance to the Plaza and the University.Not a luxury hotel though.
My D’s former college room mate spent a year at the University and loved it. I am sure your D will have a great time.</p>