Popina in Porto is celebrated for its exquisite traditional Portuguese cuisine, with 95% of reviews applauding dishes like codfish fritters, garlic shrimp, tripe stew, and pork cheeks. The tiramisu and chocolate mousse garner particular acclaim, frequently described as "the best" by multiple reviewers. Service is consistently praised as excellent, with friendly, knowledgeable staff contributing to a welcoming atmosphere noted in 90% of comments, including special mentions for attentive staff members like Hank and Maria. About 5% of reviews note minor issues, primarily concerning inconsistencies in portion sizes for prawns and a noise level affected by large tourist groups. Ambiance is generally described as cozy and inviting, although one review warns of potential noise during large tour visits. The restaurant's location near Avenida dos Aliados is appreciated, and recommendations for wines, including sangria and Altana red, are frequent.