One place that I was impressed with was that new shoping center opposite the train station (not the big grey ugly building but the next one along traveling away from customs) .
It did have a food store , but when in JB don't expect anything on par with singapore .
Decortaion forget about it , singapore is the best place, all the interior designers I know in JB actualy come over to singapore to source bits and bobs . Most things in JB can be 'tacky' . I go to ikea .