Starting a short-term rental business in popular tourist destinations like Destin, Florida, or Vail, Colorado, may have strong appeal, but a new report suggests that some small and mid-sized cities across the U.S. might be better places to start. AirDNA , a company that collects short-term rental data from both public and proprietary sources, released a report in January ranking the best places to invest in short-term rentals, and a number of small and mid-sized cities made the list. Overall in