The problem, as noted by reader AMD Pettitte, is that 315 E 15th Street is not an actual address in Manhattan. A public park sits on that side of the street, making none of the block’s odd numbers a valid address. The number will never be a valid address in Manhattan. This is indicated by looking closely at the picture, but none of the thousands of people sharing the false address lookup ad seemed to notice this.
So why would anyone actually be “looking for 315 E 15th” in New York? The only reasonable reason would be to locate an actual address that does exist in Brooklyn (which is also part of New York City), in an area where a series of numbered streets between East 11th and E 16th now have assigned names.
What was apparently once the 300 block of East 15th Street is now named Marlborough Road. Five blocks away, Marlborough Road turns into E 15th Street, where numbers begin on the 800 block. So Apple’s Maps returning a location on Marlborough Road when searching for East 15th Street isn’t nearly as absurd as Google’s ad portrays.