We will be staying about halfway between the Villa Borghese and the main train station, and I would like to take a bus to the Vatican (actually take a bus twice - once to pick up audience tickets, and the next day to attend the audience) As far as I can tell, the distance is about 3-1/2 miles direct, but I suspect the walking distance would be closer to five miles, including crossing the river.
Is there a convenient bus route? And any general guidelines about riding the busses in Rome?
thanks,
Don