In fact I remember the days when I started eating Biryani and it all started from Rahmania.
I doubt if this Rahmania in Lake town still exists or has been replaced by a different restaurant.
The Biryani is just not upto the mark and many a time they just reheat stuff and serve. Sometimes it us not even properly heated. The food had loads of oil and the quality of food not decent either.
There is no concept of good customer service as such except for the fact that there was an old chacha who was still humble and served well.
Not worth spending money and the rate too is nowhere compared to the service.