What is the time needed to visit Zhujiajiao Ancient Town?

The Yuyuan Garden, the Bund, the Oriental Pearl Tower, the Xintiandi area and the SH Museum are suggested to have a look. Besides, at night, it is suggested to have a try of the Huangpu River Cruise and I am sure it is worth trying.

For the ZJJ water town, I used about one day in that village. At least, you will use about one monring and half afternoon for that place.

Thanks Gorden for your suggestions.
One more question: Can we cover all these places in two days? Can you suggest, Which places I can cover in day1 and day2 in order please.

If you want to cover all of them, time is a little bit tight.
On the first day, you can head for Zhujiajiao Town first in the early morning. You are suggested to go early to aviod crowds of people in the afternoon. After finishing, you can take the Huzhu Express Line to go back to the People's Square.
If you go back to the city proper early, you are suggested to go to the Bund first and then go to take the Huangpu River Cruise at night. If you go back late, you are suggested to take the cruise first and then wander along the Bund after it.

On the second morning, you are suggested to to the Yuyuan Garden for about one to two to three hours. Then you can head for the SH Museum and then after lunch for Xintiandi area. (I suggest you to pick up one from Oriental Pearl Tower or the SH Museum), otherwise, time may not be enough.

Hope these information is helpful ~

Thank you very much Gorden. Your information is very helpful to me.