From Wuzhen Bus Station, are there signs to follow so that we can walk to the Scenic Area?

There is no English sign, but you can find it easily. If you want to Dongzha Scenic area, just walk about 50 yards, you will reach the entrance. If you want to visit the Xiazha Scenic area, take the bus K350 from the bus station and you'll reach the entrance.
The boat ride is about 1 hour.