La Oveja Negra is consistently praised as a hidden culinary gem, offering creative Spanish cuisine often described as "Michelin-level" at a "bargain" price. It is ideal for those seeking an unpretentious, high-quality dining experience focused on local products. Over 90% of diners laud the food as excellent, delicious, and innovative, emphasizing the use of local "km 0" ingredients. The tasting menus are frequently recommended for their surprising flavors and refined execution, showcasing intense and authentic tastes. The personalized and attentive service from Rafa (chef) and María is highlighted in over 95% of comments. Reviewers appreciate the chef's direct interaction, explaining dishes, and the warm, welcoming atmosphere. The setting is described as relaxed, fresh, and clean. A minor point of feedback from about 8% of reviews concerns portion sizes, occasionally noted as "a bit scarce." However, this is largely overshadowed by overwhelmingly positive feedback on food quality, value, and service.