If u ask me safe red light area then i recommend Kalighat red light area.because normal people always passing through lanes so its easy to mix up in crowd.

If u want to get a good prostitute then its a very difficult to get.i normally goes with a women name jamuna(its her nick name ).

I usually pay 500-600 to het for 30 minutes..its a standard rate.her age is 35 near,tall 5.9″ ,good physique.

I am quite surprise to see that she use android phone though she is not known English well .