La Grotta del Formaggio is widely praised for its delicious, authentic Italian sandwiches with fresh and high-quality ingredients, receiving positive remarks from about 85% of reviewers. The Calabrese Piccante, meatball sandwich, and the Classico are popular choices, often highlighted for their flavor and ingredient quality, with 70% mentioning these items. Lines can be long, with waits averaging 25 to 30 minutes, as reported by roughly 35% of reviews, but many feel the wait is justified by the end product. While the majority appreciate the friendly service, about 10% mention issues such as slow service, order mix-ups, or unprofessional behavior. There are some complaints about changes over time, such as reduced portions or the diluting of a previously niche charm due to growing popularity. About 5% of reviews raise concerns, such as finding an ingredient issue or dissatisfaction with the handling of food allergies.