[nox100]

the smart way to do it is to name an exit like Exit B5 or A12. The signs in the station, and Google Maps, will generally tell how to get to a specific exit. Or probably better would be a famous landmarks tho there aren't many to pick from in Shinjuku. A common one used to be "in front of the Alta building on the east exit" another still is "in front of the police station just outside the east exit