Rainbow Restaurant is a simple Western restaurant on Kalahila Avenue in Honolulu. The decoration of the restaurant is relatively simple and stylish. In addition to having more seats indoors, there is also a dining area outdoors. When the weather is good, many guests are willing to eat outside. It also provides a special window for car drivers not to get off the bus to buy food, which is very convenient. The western food made by the restaurant has Hawaiian flavor and is more affordable. The service of the restaurant is also very good.