Ifthar Buffets (Dhaka)

Hello! My partner and I are recently new to Dhaka and we are trying to discover the best of Ifthar feasts. We feel confident that we have tried everything available on the streets and have had the best of that experience. But now we are looking to find the fancier traditional foods that perhaps the average person on the street can't afford. We are not looking for the buffet at the Westin! Something very traditional but upscale where we can discover the best of this holiday's culinary delights. Any suggestions from foodies who have already experimented??? Thanks so much, Monja