Bloomrooms offers train station pickup, though it doesn't need to; it's right next to New Delhi station, and it's a surprising oasis of peace in the noise of Ram Nagar. It's a purpose-built hotel, which means that everything works (a novelty in India).
My room was one of the nicest small hotel rooms I've ever stayed in, spotlessly clean, with a clean bathroom and all the toiletries and hot water I could wish for. Really, I can't emphasise enough that this place is clean, and in New Delhi that's an achievement.
The restaurant serves up very decent pizza, and a very reasonable breakfast buffet for 300 Rupees. Staff are very friendly, there is a free shuttle service to the airport metro station, and wifi is very fast and reliable. I would highly recommend staying here.