As per the tnc:
The voucher can be adjusted against all Publicly Available Rates (including holiday packages & other promotionaloffers) booked directly on
www.tajhotels.com ,
www.seleqtionshotels.com ,
www.vivantahotels.com or through TajReservations Worldwide via Email or Phone or directly with the hotels. The voucher cannot be used for bookingsmade on (1) discounted and closed user group rates such as Taj InnerCircle Members Special rates, American ExpressCard member rates, Marketing Alliances rates, Negotiated rates of Corporate companies, Friends and Family rates,and Employee rates (2) bookings made via travel websites or a third party, bookings made via tour operators andtravel agents on their contracted rates, and travel-industry staff rates (3) bookings made for groups, conferences,weddings and events (4) bookings on airline staff and crew rates.
If you click any ginger hotel on tajhotels.com, it will redirect to it's own site.