Everyone knows stereotypes about Parisians and their general dislike for tourists. It can make what would be a magical trip to Paris significantly less so. Obviously, the more effort you put into understanding their culture and following their norms, the less friction there will be. However, upon reading about Madrid, it becomes clear that there is significantly less stigma against tourists. It is always a great idea to learn a few simple phrases in the native language, but do not worry about an overbearing sense of hostility. It is fantastic you are going out of your comfort zone in the first place, and Madrid is a fantastic destination.