Sheremetyevo Airport express train will take you to Belosrusskaya metro station (35 minutes). There you need to take the subway (green line) to the Tverskaya station (5 minutes), where there is the Vagabond Hostel just on the subway exit.
Domodedovo Airport express train takes you to Paveletskiy station (45 minutes). You need to take the metro (green line) to Tverskaya station. And you are on the spot (7 minutes). At the exit of the metro there is the Vagabond hostel.
Vnukovo Airport express train will take you to the Kiev railway station (40 minutes), where you need to take the metro (circle/brownLine) to go to Pushkinskaya station (purple line) with the change on the Krasnopresnenskaya station. You’re at the place! At the exit of the subway you’ll find the Vagabond Hostel. The whole journey takes 10 minutes.
Also, you can order a transfer from any airport