Any suggestions on a company to use to see the amalfi coast by water?
For starters, see this thread:
https://community.ricksteves.com/travel-forum/italy/tours-rome-amalfi-coast-capri-pompeii
From what point of origin? If you're departing from Positano, Blue Star gets rave reviews. They have a tent/office right on the beach during the season.
Oooh, good catch, Celeste. A previous post indicates that the OP is staying in Naples. Kossowm. you may need to catch a fast ferry to Sorrento and start a tour from there.
Sorry. staying in Sorrento
Use the ferry system. You don't need to hire a tour company unless you want a private tour, or to stop at certain places.