I am first time traveller in Europe. have two back to back conferences, 8-10th July 2019 in Metz, France and 17th-19th July in Gulf of Naples, Italy. I have 6 days in between for travel with my wife. I am looking for some tips regarding some good places to visit (gradually travel from Metz to Naples preferably by train) and places to stay. A possible budget itinerary.
Thanks in advance