Steve Bailes and I have booked to do a motorbike tour with Adriatic Mototours next April. Tour starts in Venice, Italy on 18th April 2020 and ends back in Venice on 3 May.
From Venice we head across Tuscany visiting, amongst other places, Pisa, Assisi and Florence before catching a ferry to Sardinia from Livorno. A ride around Sardinia then another ferry to Corsica for a lap of that island and then a ferry back to Italy and the Cinque Terra before riding back to Venice.
Click on this link to get more detail of the itinerary, pricing, bikes, hotels, etc.