Demon Duck is consistently praised for its remarkable atmosphere and high-quality cuisine, receiving an overwhelming 95% of reviews with 5-star ratings. Patrons often highlight the "elegant ambiance," "beautiful setting," and "chic and playful" interior, which contribute to an unforgettable dining experience, with notable appreciation for the outdoor terrace. The service is frequently described as "attentive," "impeccable," and "welcoming," with specific mentions of staff members like Antony, Maria, and Vahob who enhance the guest experience significantly. The food is celebrated for its "spectacular," "flavorful," and "beautifully presented" dishes, with the signature Slow Roasted Demon Duck being a standout favorite alongside other menu items like the crispy duck, lobster gao, and chocolate matcha dessert. Though one review points to the roast duck as "disappointing," and notes some shortcomings in service related to casual behavior, such concerns are isolated and not representative of the broader experience described.