According to the papers it seems as if the strike reached most places, north and south, with Milan and Naples being the two least affected cities. The strike mainly affected transportation, so if you were already where you needed to be it wouldn't necessarily be noticed.
Reading the papers:
1. Rome was in chaos, with historic traffic jams. In Milan and Naples there were disruptions due to marching protestors that blocked parts of downtown transportation, but the trains and funiculars still ran pretty normally for most of the day.
2. Torino had a 30-60% reduction in services for part of the day, with transportation described as semi-regular. Even during a strike in Italy, transportation still goes on during the parts of the day when people need to come and go to work.
4. In the northeast, Friulia-Venezia-Giulia was significantly affected, especially Trieste and Udine as was Genoa in the northwest.
5. Although it was mainly about transportation, schools and many public services such as fire departments, post offices, and garbage collection were shut down across many parts of the country. Even many cemeteries were closed, so there was no place to bury the dead.
6. Venice and Treviso put out bulletins not to go to the airport until you checked with you airline to see if the flight was canceled. The airports at both of these cities were described as calamitous due to lack of porters and other services, but in the end there were some flight delays but not many cancelations.
7. Bologna got hit hard. Emilia-Romagna, and Bologna in particular, are very susceptible to workers' strikes as they were ruled by communists for decades after WWII, and just left communism fairly recently. Along with Tuscany, Umbria and Le Marche, it formed the "Red Quadrilateral" of Italian communism until the early 1990's.
8. Venice was without vaporetti for a portion of the day. This is always significant to elderly Venetians because having to go up and down a bridge every 20-40 yards to get anywhere is not something that elderly people can easily do, especially carrying groceries, so they depend on the water buses.
No doubt, it could have been worse. This article lists the effects on many cities.
http://www.today.it/cronaca/sciopero...016-orari.html
http://www.veneziatoday.it/cronaca/s...obre-2016.html