I think that Google map is wrong on the location of the Taj. The map shows Taj President Hotel. I believe the one attacked is the Taj Mahal hotel.
I think you’re right — all the news references are to the “Taj Mahal Hotel” not to the “Taj Presidential Hotel” — and the photos from the news reports also seem to correspond with the Taj Majal Hotel:
http://maps.google.com/maps/ms?msa=0&msid=100866907082629170478.00045c9e38432e998532d
But since there are reportedly 15-19 attack points, it may still turn out that both hotels were attacked??? I sure don’t know, but we may be a long way from knowing the full scope of what has happened.....