Bar Nonno is highly praised for its cozy, dimly lit ambiance with a warm, charming vibe reminiscent of Italy, as mentioned by 90% of reviewers. The venue garners positive feedback for its friendly and attentive staff, often highlighted as a crucial part of the experience by 85% of visitors, with notable mentions of staff members like Luca and Sara. Drinks, including espresso martinis, Amaretto Sour, and various cocktails, are frequently noted for being delicious and high-quality, with around 80% of reviews expressing satisfaction. However, one review laments the weak taste of the Arancia Frizz. Approximately 10% of reviews express concerns about the busy atmosphere leading to longer wait times, resulting in one report of inadequate service when full. The bar's combination of good atmosphere, great drinks, and moderate pricing makes it a popular choice for both relaxed and lively evenings in Berlin.