All three stations are located on Komsomolskaya Ploshchad, roughly 30 km by road to the north-east of the Planernoe Hotel. As there is no convenient public transport to the hotel, prearranged transfer is definitely the best option, although you can save money by taking the metro and then a short taxi trip to the hotel.
By taxi
The journey to the hotel by taxi will take 40 minutes in clear traffic, and taxis should cost around $50. Alternatively, you can order a transfer with a driver to meet your train here.
By metro
Komsomolskaya Metro Stations is accessible from the concourses of all three stations. Take the brown circle line and travel counterclockwise three stops to Krasnopresnenskaya. Change to the purple line and head north all the way to Planernaya. From there it is a 15-minute taxi ride to the hotel.
