Kursk Station is a little over 30 km from the Planernoe Hotel. Due to the hotel's secluded suburban location, a prearranged transfer is definitely the most comfortable and secure way to make the journey, but if you wish to save money you can take the metro north and then use a taxi to cover the last few kilometers to the hotel.
By taxi
The drive to the Planernoe Hotel from the station will take around 50 minutes in reasonable traffic. Taxis will cost at least $50, or to save trouble you can book a transfer with driver to meet your train here.
By metro
From Kurskaya Metro Station, which is connected to the concourse of the mainline station, take the brown circle line four stops counterclockwise to Krasnopresnenskaya. There, change to the purple line and travel all the way north to Planernaya. From there it is a 15-minute taxi ride to the hotel.