Here is some advice that may be useful to you if your aircraft has just landed at Ciampino airport or Fiumicino airport or if you are traveling within the city of Rome. Thorsten Reulen has compiled his travel information (which you will not find in such detail in any expensive “Travel Guide Rome”) in a pdf document “Arrival Instrucitions Rome“.
Information for your journey to the venue Palacavicchi can be found in this article: