Belarus Station, which serves trains to Belarus (Minsk and Brest), Kaliningrad, Smolensk and international destinations including Vilnius, Warsaw, and Berlin, is about 3km to the north-west of the Ararat Park Hyatt Hotel.
By taxi
Taxis will take around 20 minutes to reach the hotel (allow considerably more at peak times) and cost $15-20. You can also book a transfer with a driver to meet your train here.
By metro
It is a simple journey from Belorusskaya Metro Station, connected to the mainline station, three stops south on the dark-green line to Teatralnaya, which is around 200m from the Ararat Park Hyatt Hotel.