Analyzing the reviews for Red Onion suggests the establishment holds a strong reputation for accommodating dietary restrictions with dedicated menus for gluten-free, dairy-free, and vegan customers, closely mirroring their regular offerings. This inclusivity has garnered positive responses, particularly from guests who have traditionally found dining out challenging due to allergies or dietary preferences. Patrons commend the quality and taste of the food, mentioning a range of dishes from Sunday roast to monkfish curry, all receiving high praise. The presence of the chef inquiring about guest satisfaction and sharing culinary insights adds a personal touch that resonates with customers. However, service inconsistencies have been noted, with occasional lapses in attentiveness leading to unmet needs during dining experiences. While the ambiance generally receives positive remarks, with clean facilities and a pleasant atmosphere conducive to special occasions, there are suggestions that the decor could benefit from updates.