itinerary - water bus line 1 full ride                              

Panoramic tour of Venice  best views CANAL GRANDE

terminal direction from Lido island to Piazzale Roma terminal

map of the tour line 1 from Lido to Piazzale Roma, 
click the drops to see the monuments close to each ferry boat stop

Line 1  ferry boat 

Positive: wonderful view along the Grand Canal with the stops of the most beautiful tourist points, I mention a few San Marco square Accademia Bridge, Rialto bridge.

Negative: it is slower because it makes all 19 stops, the very large and wide ferry that travels along the Grand Canal 
Journey time from Piazza San Marco to Venezia Santa Lucia station about 40 minutes.
Journey time from LIDO S.M.E  to terminus PIAZZALE ROMA about 49 minutes about 4,7 km
The Giardini Valeresso stop to reach Piazza San Marco was registered at the San Zaccaria stop.