Went there with a friend on a Sunday. It was really crowded, suggest that you make the bookings prior to reaching there to avoid waiting. We has to wait for more than half hour.
All in all, I liked the place. Food was good, but not great I would say. We had alu bhaja, ada moonger dal, pathar mangso and parser jhol. Moonger dal was really good. Pathar mangso was ok, but too spicy. Alu bhaja reminded me of the family gatherings back home.
Ambience is good. The best part of the place would be the style with which they have organized the menu and the food. Waiters were co-operative too. Last but not the least, I would the place is overtly expensive. Am sure they have considered the fact that Bengalis in Bangalore would be ready to shell out the price they have asked for.
Overall I would recommend the place.