Take the JR Chuo Line to Shinjuku Station (about 14 minutes).
Transfer at Shinjuku Station to a local train on Odakyu Line .
Get off at Sangubashi Station (about 3 minutes from Shinjuku).
The NIYE is about 7 minutes walk from the station.

From Narita Airport

Take the JR Sobu Line to Shinjuku Station (Narita Express about 80-90 minutes).
Transfer to a local train on the Odakyu Line (about 3 minutes).
The NIYE is about 7 minutes walk from the station.

From Haneda Airport

Take the Tokyo Monorail to Hamamatsucho(about 23 minutes).
Get JR Yamanote Line to Shinjuku(bound for Shibuya, about 23 minutes),
Or take the Keikyu Line to Shinagawa station(about 16 minutes).
Get JR Yamanote Line to Shinjuku(bound for Shibuya, about 23 minutes),
Transfer at Shinjuku station to local train on Odakyu Line.
Get off at Sangubashi station(about 3 minutes from Shinjuku).
The NIYE is about 7 minutes walk from the station.

By Subway (Chiyoda Line)

Get off at Yoyogi-Koen Station (Exit No.4 ).
The NIYE is about 10 minutes walk from the Exit No.4.