Marunuchi Line - Ginza Station

It turns out my hotel (the Hilton) has direct access to the Nishi-Shinjuku station of the Marunouchi subway line.

Your advice please:
I have several days of meetings at the Tokyo International Forum - which would be a shirter walk? Exit the Marunouchi at Tokyo Station (M17) or Ginza (M16)?

(I cannot locate the Ginza station on a map)

Secondly, if I wanted to get to the Sony building in/near Ginza, again, would the Ginza stop be the better option?

Thank you for your time

It takes 5 min both from Tokyo station and Ginza station. But Ginza station is a bit shorter ride from Nishi-Shinjuku station.

http://www.t-i-forum.co.jp/english/access.html

As for Sony Building, Ginza station is much closer.