The standard itinerary is what you can see on the map below.
I prefer not to cross the Grand Canal or the busiest channels where you can go by public transport or taxi, but navigate through all those channels where even for a gondola it would be difficult to pass.
There are Channels that sometimes even a Venetian has never seen and where almost certainly a non Venetian visitor is unable to access.
The ride takes about 1 and a half hours, but it can take 2 hours depending on traffic, weather conditions, or disadvantages during the excursion: this makes the journey even more realistic.
What I propose is a kind ride but you will be deciding where to go.