what is the best and fastest way to travel from shanghai train station to wuzhen?

From the train station, I am afraid that there is bus to WZ.
from SH South Bus Station, there is direct bus to reach WZ.
If you want some budget hotels, Wisteria Youth Hostel may be a good choice. If want some nice ones, Waterside Resort may be a good choice.
Water Market, Indigo Fabric Workshop, Wine Distillery Workshop, Shadow Play and Folk Customs Museum cannot be missed.