OP says no eccentric Chinese cuisine and must be OK for western palate.
I really like King Hot Pot. There are plenty of choices there that would
not upset a western palate, but you do have to like spicey food.

Have not really sought after western food in Shanghai but once went
to Malone's with Chinese to get some Margaritas, which weren't very good
and their Mexican food wasn't either.

As many times as I have taken westerners to hot pot restaurants never had anyone say they didn't enjoy it.

2.Hot Pot King
Cuisine: Chinese, Asian
2F, 1066 Huaihai Zhong Road
(above Planet Shanghai restaurant)
Shanghai, 200031 ^