Near San Lucas Square is the Goldoni Theatre. The area is small, but because it is near the Rialto Bridge, it is very busy. Passing by Piazza San Marco, the famous Turin bar is here, there are some light concerts in the square at night, and some tour companies
San Lucas Square was once one of the busiest areas in Venice, very close to the Rialto Bridge.
The scenery around the square is very nice, it's worth going around.