Le Levain is a charming French bakery in the Trastevere neighborhood of Rome. They specialize in artisanal breads, including baguettes, sourdough, and whole wheat loaves. They also offer a variety of sweet pastries, such as croissants, pain au chocolat, and fruit tarts. The bakery has a rustic feel, with exposed brick walls and wooden tables, and is a popular spot for breakfast or brunch.