I have just joined IIT Delhi, so I am not very knowledgable about how life at IIT D really is. But I will tell you my experience so far.
When I first arrived, I liked the campus, but did not quite like the accomodation facilities. The hostels appeared cramped, untidy and claustrophobic. I guess it was natural to feel so, coming from the comfort of one's own home. Now that some time has gone by, I realise that it isn't as bad as I had thought. I know I'll gradually grow to love the place, and I can't wait for it to happen.