VenusFort is a five minute walk from Tokyo Teleport Station exit A. From leaving the station you will see a huge Ferris wheel in the distance, and VenusFort just below it to the right. From Shinjuku Station to Tokyo Teleport Station:
Take the Yamanote Line to Osaki Station, change trains to the Rinkai Line for Tokyo Teleport Station (25 minutes, ¥500)
From Tokyo Station to Tokyo Teleport Station:
Take the Yamanote Line to Osaki Station, change trains to the Rinkai Line for Tokyo Teleport Station (20 minutes, ¥500)