It is about 10 km from Belarus Station, the Moscow terminus for trains to/from Belarus (Minsk and Brest), Kaliningrad, Smolensk and international destinations including Vilnius, Warsaw, and Berlin, to the Okhotnik Hotel.
By taxi
Depending on the time of day, the journey by taxi will take about 20 minutes, but should not cost more than $30. If you prefer, you can pre-order a transfer with a driver to meet your train here.
By metro
From Belorusskaya Metro Station, take the dark-green line five stops north to Vodniy Stadion. The Okhotnik Hotel is across the road from the metro.
