This is a easy grade one ferrata. There is about 100 meters of protected path but no ferrata equipment is needed. The ferrata is in the Fanes National Park. You will need to park at the entrance near the visitors centre and walk for about 45 minutes to the start of the ferrata. The path runs under a waterfall but you will only get a bit damp. Giovanni Barbara can be combined with the nearby VF Lucio Dalaiti. It will take about four hours to complete both.
Reference - Via Ferrata of the Italian Dolomites: Volume 1 by John Smith and Graham Fletcher. Published by Cicerone, UK. ISBN1 85284 362 4.