The Lido, or Venice Lido, is an 11-kilometre-long barrier island in the Venetian Lagoon, northern Italy; it is home to about 20,400 residents. The Venice Film Festival takes place at the Lido late August/early September.
Wikipedia https://en.wikipedia.org/wiki/Lido_di_Venezia
Coordinates 45°23'19.702" N 12°21'18.381" E