Sylva Varescu is a fictional character from the operetta "The Merry Widow," composed by Franz Lehár. She is a charming and spirited young woman who becomes the center of attention in a romantic plot involving love, wealth, and social intrigue. In the story, Sylva is pursued by several suitors, including the wealthy Danilo Danilowitsch, who has a complicated past with her. The operetta explores themes of love and the challenges of relationships, set against a backdrop of lavish parties and elegant settings in Paris.