Ichiban Boshi offers a diverse menu of Japanese cuisine with consistent food quality, friendly service, and a cozy atmosphere. Despite occasional long queues during peak hours, the restaurant provides prompt, attentive service and well-prepared dishes, especially sushi, sashimi, and set meals. However, some patrons report issues with service delays, inconsistent food standards, miscommunication, and hygiene concerns like flies and cold food. Overall, it remains a popular choice for family and casual dining in Singapore, with improvements noted at certain outlets and dedicated staff enhancing the dining experience.