The Infinity AQUA CLASS BLU food and service is very poor, the cuisine being highly inferior to that which is served in the main dining which, itself is not very high in quality.
BLU is supposed to serve cuisine which is light and healthy but many of the dishes have cream, and use deep frying techniques which are unsuitable based upon the claims made by the company.
The only advantage to the BLU dining room is that it is small thus promoting interaction among the guests. At the same time one is paying to segregate oneself from the rest of the passengers, thereby placing oneself in a separate class of service which is somewhat questionable.