Located about 10 minutes on foot and one of the nearest stations from UNPLAN Shinjuku. Shinjuku Sanchome Station is a subway station with access to the Marunouchi Line, Toei Shinjuku line, and Fukutoshin Line.
*Reason for recommendation
Please be careful as both JR Shinjuku Station and Shinjuku Sanchome Station are pretty close to each other, but these are different stations. However, they are connected via an underground passage so it's possible to walk between with two without going outside! The nearest exit to UNPLAN Shinjuku is C7.