ShanghaiHomeDecor
http://www.shanghaiexpat.com/PNphpBB2-viewtopic-t-17446.phtml
Lots of good home decor shops off Wending Lu near XuJiaHui. You have to do a bit of scavenging, but there are some great deals if you don't mind searching. I know there is a whole big rug store over there, too.