I visited delhi for buisness purposes and my company offered me to stay in Vivanta by Taj.
It was an awesome experience staying in this hotel, the rooms were amazing and so was the food with a wide variety of cuisines to choose from.And specially the 5mbps speed which helped me complete my work on time.Rooms are very well designed and also they have a quick room service.The hotel is near the airport so there is not much to stroll around.