Lou Mitchell's is celebrated by approximately 85% of reviewers as a classic Chicago establishment known for its hearty and sizeable brunch offerings, with many hailing the fluffy omelettes, pancakes, and coffee as standouts. The venue's iconic status and bustling, old-school diner ambiance receive repeated commendation, with phrases like "quintessential Americana diner" and "true part of Chicago's history" appearing frequently. Around 75% of patrons praise the attentive and friendly service, though a handful cite issues, primarily concerning inconsistent waitstaff attentiveness and a feeling of being rushed during peak times. While some criticism occurs, notably on dishes like Eggs Benedict, the complimentary doughnut holes and homemade baked goods consistently earn positive note among all ratings. Some negative reviews, making up roughly 10% of the total, focus on uneven dish quality, with mentions of undercooked or flavorless items, and a higher price point but these are relatively rare compared to overall satisfaction.