Minneapolis, a city of lakes, has it all — an industrial past that is both gritty and glamorous; affordability and a high rate of employment that make the city a magnet for millennials (17 Fortune 500 companies are headquartered in Minnesota); and a full spectrum of cultural offerings and recreational activities. This year, Minneapolis and its environs have been a destination for Prince fans intent on exploring the artist’s beloved hometown — a place he stayed close to until his death last April. Urban authenticity, cultural sophistication, Midwestern friendliness: They all add up to the perfect formula for a weekend away.