Williamsburg landlords may have found a solution to their L train worries: attracting tenants rich enough to take a helicopter to work. An apartment at XIN Development’s Oosten condo development on Kent Avenue is set to hit the market for $18,500 a month – the highest asking rent in the neighborhood. The duplex sports 13-foot-high ceilings and a private garden with a plunge pool. Williamsburg’s second-priciest rental, a converted 19th century firehouse, clocks in at … [more]