I suggest you take a taxi directly to Foxconn. The Foxconn you mentioned is not in a prosperous area, but in Wusongjiang Development Zone in Kunshan, which I think is rather desolate. This is a suburb. But Foxconn has many employees, and there are all kinds of food and play in it. Don't worry about this. Does not mean that Foxconn is equivalent to a school. It seems that there are only two buses around.
Renting a house there is super cheap. You can get a good rental in 400 yuan at 300, but I'm only talking about the sharing price. Oh, I'll provide you with two websites, Kunshan Windows and Kunshan BBS, which you can find through Baidu search. When you arrive, you can go to the surrounding communities and learn about the source of renting houses online.
I still suggest that you'd better come by train. There are more trains from Shanghai to Kunshan. When you arrive in Kunshan, you should take a taxi directly. There are too many migrants and buses in Kunshan, so it is inconvenient to bring things. If you start from Kunshan Hotel, it is estimated that it will cost more than 20 yuan.
I hope I can help you, and I wish you a happy work ~ ~ ~