By Lisa Johnson Mandell The most expensive rental apartment in Los Angeles has landed on the market at a staggering $100,000 a month. But when you learn about the features and amenities this one-of-a-kind penthouse offers, you might believe the six-figure sum is a royal deal. For starters, the 18,000-square-foot unit takes up … [Read more...] about This $100K a Month Penthouse Takes L.A.’s Rental Market to New Heights