D,F,Q,or N train to Stillwell Avenue then take B74 Bus to West 19th Street.

Bus:
B68, B64, or B82 to Stillwell Avenue then take B74 to West 19th Street.
B36 to Surf Avenue and West 17th Street(walk to Mermaid Avenue and West 19th Street).

Car:
Exit on 6S on the Belt Parkway (Cropsey Ave, South).