Lido di Venezia in Venice, Italy

Lido is an island, a long sandbar in the Venetian Lagoon, accessible by boat. The main street, Gran Viale Santa Maria Elisabetta is a wide street, lined with shops and eateries that leads from the lagoon (and vaporetto bus stop) to the wide open sea. Tourists can stay, shop, and eat all on this one stretch. At one time, this was the home of the Doge of Venice. With a slight touch of modernity, Lido is not as antiquated as the other islands. It boasts a luxurious and carefree place. It was once a hotspot for old Hollywood celebrities and European aristocrats but those days have faded. The well kept beaches, complete with cabanas are still a sight to behold. 

RECOMMENDATIONS

Travel
From S. Zaccaria (right near Piazza San Marco and the Doge's Palace): Take the ACTV's Line 1 vaporetto (waterbus) towards Lido.
Coordinates: 45.3893° N, 12.3531° E

Cost & Admission
Free, open anytime.

Food
Various cafes and restaurants nearby.

Activities
Walking, seeing the views, purchasing souvenirs.

Tips
Lido is very walkable, just like Venice. You can spend half a day here and slowly meander through, eat gelato, eat a sandwich, and buy a few souvenirs. Walk the main street going from vaporetto stop towards the ocean. You'll see a good portion of what the island has to offer.