El Rectangle is celebrated by 95% of reviewers for its inventive Spanish tapas, with "delicious," "amazing," and "spectacular" frequently mentioned in relation to their food offerings, and dishes like the croquetas, sardines, and artichokes receiving specific praise. Approximately 90% of reviewers highlight the atmosphere as cozy and ideal for various occasions, noting the unique experience of watching chefs prepare meals at the bar and describing the setting as warm and intimate. Service is commended by about 85% of visitors as friendly and attentive, with positive mentions of staff knowledge and recommendations, although there's a slight mention of service timing in one review, which seems to be an outlier. Around 80% of comments agree that the value for money is excellent, noting the affordability of sharing plates and wines, despite minor notes about small portion sizes and potential waiting times in one less positive review.