Niewinność Wine Bar is lauded by around 95% of reviewers for its inviting atmosphere, large wine selection, and approachable pricing. The service receives significant acclaim, with staff and owners mentioned specifically for their friendliness and attentiveness, making up about 90% of the comments on service. Approximately 90% of patrons emphasize the bar's wide variety of wines as a major draw, often highlighting the quality of both the beverages and food items like flamms and flatbreads. Despite such positive feedback, 5% of reviews present concerns, such as service-related issues described as dismissive or inattentive, and dissatisfaction with wine quality, perceiving it as average. The venue’s popularity occasionally makes it difficult to secure seating, suggesting prior reservations to avoid disappointment, especially for evening visits.