Originally Posted by
Mr. Bean
if the OP plans to see the city, I think the Oberoi would be the best "base" to do that from. A number of things are in (reasonable ~1-2 km) walking distance: Humayun's tomb, India Gate, then across to the Parliment/Rajpath. IIRC, Maurya (Chanakyapuri) is pretty isolated from major points of interest.
The Maurya in Chanakyapuri or the Taj Mahal hotel on Mansingh Road near Khan Market/Lodhi Gardens aren't positioned any worse than the Oberoi for an international arrival-city tour-domestic flight departure itinerary.
If anything, I'd consider both to be somewhat better positioned than Oberoi for seeing the city.
I would not be walking from the Oberoi to India Gate or the area around Rasthrapati Bhavan and the Parliament -- it's neither a pleasant nor short walk.