From your description
sounds like you just want to be near a big mall. But in that case, why bother coming to LA?
For some unfathomable reason, people are gaga over the Grove, so there's always the Farmers Daughter motel. Or the Park Plaza motel on the other side. But beware - that "mall" is crazy nuts during the holidays.
Others seem to think the Century City Mall has a good mix of stores, but it's still under construction. Don't bother with Westside Pavillion, they don't even have a Gap anymore (really)!