We arranged a 3-hour tour of Bergamo with Sara on our way from Lake Como to Lake Garda.  Communication before the tour was excellent.  The tour was interesting and informative.  Sara is extremely knowlegeable about the history, architecture and art of the city and delivers her commentary in a very authentic, enthusiastic and entertaining (and easy to understand) manner.  We would certainly return to Bergamo again for a longer stay and definitely recommend Sara to others.