El Mosquito in Langenthal is highly praised for its friendly and attentive service, creating a welcoming and authentic Mexican atmosphere that guests find relaxing both indoors and in the garden during summer. The restaurant is noted for its fresh, flavorful Mexican dishes, including specialties such as nachos, fajitas, burritos, and well-known cocktails like daiquiris and margaritas. The rustic yet charming décor and carefully curated lighting contribute to an inviting ambiance. While many appreciate the quality and presentation of the food and the overall experience, some reviews mention that prices may be on the higher side and that there can be occasional delays in service, particularly with waiting times for food or order placement. Reservations are recommended, especially during busy periods. Overall, El Mosquito is regarded as a delightful dining option for special occasions and those seeking authentic Mexican cuisine in a pleasant setting.