The Taj Gateway in Bangalore is on Residency Road. I have never stayed there, so I have no insight on what that particular hotel is like.

What I can say is that every Taj hotel I've stayed at -- including ones like the Ambassador in DEL that is now the Taj Ambassador -- has had good service and decent rooms competitive with the rest of the majors. What may be missing in some of these other Taj hotels is the grander facilities, but they are still basically as good as anything else in town.