I think it's Hotel Green Ochanamizu, I stayed there when I went to Tokyo earlier this year. As bosozoku said, it's a pretty decent hotel and yea, its smack near Kanda Station. When you land at Narita, get an express ticket to Tokyo station. From there to Hotel Green is only about 8 to 10 SGD.
Anyway, I managed to survive with the eye-witness guide to Japan and food there isn't exactly very expensive. You can go to many of the small eateries around. Normally near the entrance they have these vending machines with pictures of the food on them. All you need to do is to put your money in, press the button, collect the ticket and pass it to the chef. They'll whip it up and bring it to you!
Man... I love Japan!!
I had to book everything myself.. managed to get plane ticks from Creative Travels (at hong leong bulding) They're teh JAL agents here.
Hope this helps!!