At the onset let me tell you I am a Bengali. The restaurant appeared to be managed by Non Bengalis. The cuisine has Bengali dishes but they are far from authentic. For example, the dab chingri was anything but. The shukto was anything but and so was the chanar dalna. The servings are small. The service is slow. There was a furious lady at another table who shouted for the basic thali saying she was waiting for over 45 minutes. The staff strength is low. And there are no signs that only cash is accepted. The fellows produce handwritten bills and do not accept credit cards to cheat the tax authorities.
AVOID.