1. Campo Santa Margherita is a large and lively square located in the Dorsoduro district of Venice, Italy. It is characterized by its bustling atmosphere, filled with local residents and university students during the day and lively nightlife venues in the evening. The square is lined with cafes, restaurants, shops, and a daily outdoor market where locals buy fresh produce and fish. Interestingly, the square was named after Saint Margaret of Antioch, who was considered the protector of pregnant women and was believed to have assisted Venetian women during childbirth.

2. There are no specific working times or phone number for Campo Santa Margherita, as it is an outdoor square that is accessible 24/7. However, individual shops, cafes, and restaurants within the square may have their own opening and closing times, which vary.

3. There are no tickets required to enter Campo Santa Margherita, as it is an open-air public square. However, to reach the square by public transportation, visitors may need to purchase a vaporetto (waterbus) ticket. The closest vaporetto stops to the square are Ca’ Rezzonico and San Tomà.