Trains arrive at Belarus Station from Belarus (Minsk and Brest), Kaliningrad, Smolensk and international destinations including Vilnius, Warsaw, and Berlin. The station is around 15 km from the Izmailovo Beta Hotel.
By taxi
It should not take more than 40 minutes to drive to the Izmailovo Beta Hotel except in the worst rush hour traffic. If you can negotiate a taxi on arrival, the fare should be around $40, but it is probably easier to arrange a transfer with a driver to meet your train, which you can do here.
By metro
Take the metro from Belorusskaya Metro Station and travel four stops clockwise on the brown circle line to Kurskaya. Change there to the dark-blue line and travel four stations north to Partizanskaya, which is under 100 m from the hotel.