Kitay-gorod is a knot of lanes, and an escort flat here is found by the lane name and the door, not by the nearest church. Two courtyards open off the same bend.
Cars do not belong in the smallest lanes. The useful plan is the last street a car can actually stop on, then a short walk with the number already known.
Also in Moscow: Barrikadnaya and Where to find an escort on Tverskaya.