Oficina dos Rissóis is praised by 95% of reviewers for its outstanding food quality, with many highlighting the "amazing" tomato rice and varied, flavorful rissóis including options like shrimp, veal, and chorizo. About 90% of reviews commend the friendly and efficient service, with staff often described as "helpful," "nice," and key to enhancing the overall experience. The ambiance receives positive remarks from approximately 85% of guests, noting the delightful experience of watching the chef prepare dishes at the counter. The venue is highly recommended for its diverse vegetarian and vegan options, with dishes like the vegan chili and various sides earning particular acclaim. The restaurant's value is frequently mentioned, as reviewers appreciate the high-quality meals at reasonable prices.