Apartment 15 at the Imperial is completely renovated and a stone's throw from the Carlyle. The meticulous renovation restored much of the original details, such as, the intricate wood floors, tiled fireplace surround and wood carved mantel with mirror. These details are matched with a striking kitchen and bath.    The Imperial is a rare and well preserved architectural gem designed by renowned architect Louise Braverman in 1883 between Madison and Park Avenues. Entering this landmarked building though glass and wrought iron doors one feels transported back in time. The elegant lobby has intricate mosaic tiled floors, marbled walls and seating. There is a doorman on duty from 8am-midmight daily.    There are double wood doors through which you enter apartment 15. This charming home has north and west exposures, 2 bedrooms, 1 bathroom with a tiled shower, separate bathtub and heated floors.    The eat in kitchen is bright with two windows, a Viking stove, stainless steel counters, Whirlpool washer dryer, Miele dishwasher, Liebherr refrigerator and heated floors. There are 3 through the wall a/c units and new windows. The wood burning fireplace may be opened for use with board approval.    There is a 2% seller paid Flip tax, a laundry room and storage in the basement. Pied a terres are permitted.