Delhi does not have a centre the way Paris or Rome has a centre. It has several, laid down in different centuries, separated by distances that look trivial on a map and then swallow fifty minutes of a weekday evening. The Red Fort and the airport sit roughly twenty-five kilometres apart. Old Delhi and the leafy colonies of the south are, in daily practice, different cities: different opening hours, different food, different noise at four in the morning.
So the room is not really a room. It is a decision about which of those cities you will have your breakfast in, which one you will come back to at ten at night, and how many hours of your trip you will hand over to traffic. Visitors who leave Delhi saying they found it exhausting have usually not been defeated by Delhi. They have been defeated by a hotel chosen from a photograph, in a district that required a forty-minute car journey to reach anything they had come to see.
There is one piece of good news that makes the whole problem tractable. The metro is the one part of Delhi that is consistently fast, air-conditioned and predictable, and it now reaches nearly everywhere a visitor needs to go. If you take a single rule from this piece, take this one: book within a ten-minute walk of a metro station, and let the star rating come second. A grand hotel that needs an auto-rickshaw to reach the nearest line will cost you more hours than a modest one sitting on top of it.
The five Delhis, and what each one is for
Shahjahanabad, which everyone calls Old Delhi. The walled seventeenth-century capital: Chandni Chowk, the Jama Masjid, the Red Fort, the wholesale spice lanes of Khari Baoli. Dense, loud, magnificent, and largely shut by ten in the evening. It is reached by Chandni Chowk station on the Yellow Line and by Lal Qila and Jama Masjid on the Violet Line. Cars cannot enter most of it, which is a fact with consequences for luggage.
Lutyens' Delhi and Connaught Place. The imperial capital built in the 1910s and 1920s - wide avenues, roundabouts, India Gate, the Lodhi Gardens, Khan Market. Connaught Place sits at the commercial top of it, and Rajiv Chowk underneath is where the Yellow and Blue lines cross. Two stops north, New Delhi railway station is both a mainline terminus and the city end of the Airport Express.
Nizamuddin. A Sufi quarter grown around the shrine of Hazrat Nizamuddin Auliya, with Humayun's Tomb and the restored gardens of Sunder Nursery on its eastern flank. The dargah holds qawwali sittings on Thursday and Sunday evenings, which is the single best reason to sleep nearby rather than visit. Nizamuddin East, across the road from the shrine, is a quiet residential grid of low bungalows and garden walls.
South Delhi. The colonies built after 1947 and since: Hauz Khas, Defence Colony, Greater Kailash, Saket, Vasant Vihar. Trees, neighbourhood markets, the most serious restaurant cooking in the city, and two metro lines. This is where Delhi residents with a choice actually live.
Aerocity. A hotel and office district raised beside the airport over the last fifteen years. Not a neighbourhood in any historical sense, and it does not pretend to be. It is purpose-built, and it is occasionally exactly the right answer.
For a sense of scale: from Connaught Place, Old Delhi is roughly ten minutes by metro, Hauz Khas around twenty-five, and the airport about twenty on the Express. By road at six in the evening, add half again to any of those, and more in late-December fog.