Kievsky rail terminal is a landmark and a bad place to stand with a phone out. Europe Square, the Radisson side, and the river promenade are three different walks from the same glass roof, and an escort address near the station is always on a street beyond those exits, not on the square where taxis fight for space.
If the guest arrives by train, the first message should name the exit, the street beyond it, and the flat or hotel door. If the guest arrives by car from the airport, say whether the driver should use the square or the embankment side — the loop around the station can add fifteen minutes when the wrong side is chosen.
Checklist: (1) exit name or hotel on the square, (2) room or intercom, (3) car stop street if not the square, (4) time after train arrival or check-in. Presnya and Moscow City are close on a map but not on a clock — read Presnya after six if the address is west of the station, not if you only wrote near Kievsky.
Map: Kievsky station on Google Maps. Also in Moscow: Belorusskaya lanes, Pokrovka in the evening, and Moscow Escort.