Koi cafes generally receive positive feedback for their tasty drinks, friendly staff, and convenient locations near MRT stations. Customers appreciate the consistent quality of their beverages and helpful service, though some express dissatisfaction with slow service, incorrect orders, and staff attitude issues. While many find the ambiance pleasant and the experience enjoyable, a few reviews highlight instances of poor customer interactions and long wait times. Overall, Koi maintains a solid reputation for quality drinks and decent service, with room for improvement in staff training and operational efficiency.