Godzillas Hostel Moscow: Bolshoi Karetnyy 6 apt. 5 (first floor). checkin: 2PM; checkout: 12PM. Pretty reasonable hostel with decent bathrooms and very friendly staff. It's in a convenient location. Only minutes away from local bars and restaurants and a 20-25 minute walk from the Kremlin. Small number of showers and internet terminals are the only downside. Prices start at 725 rubles per night in a dorm or at RUB1,740 per night in a double room.
Napoleon Hostel: Maly Zlatoustinskiy 2 (4th floor). Good hostel with an excellent location in the quiet city center. Dorm prices start from 800 rubles per night.
Suharevka mini-hotel: Bolshaya Suharevskaya Ploshad 16/18. Pleasant mini-hotel with nice location in the center of Moscow. Private rooms are quite nice for the price (around ?60).
Comrade Hostel: Maroseyka street 11, 3rd floor (m. Kitai-Gorod) (in courtyard, second left after you pass McDonalds). checkin: 12.00; checkout: 12.00. A nice clean hostel, with an intimate atmosphere, located only 10 minutes walk from the Red Square. The owner Dennis is really helpful. Free internet. *NOTE: Comrade Hostel is not registered to issue Russian Tourist visas. They may issue you an invitation, but it will not be accepted at the Russian Consulate. 700 RUB per night in a dorm.
Moscow Home-hostel: 2-y Neopalimovsky per., 1/12 (m. Park kultury). checkin: 1PM; checkout: 12 PM. Located in the picturesque quiet park zone within 5 minutes walk from metro station and 20 minutes walk to the Kremlink Prices start at 550 rubles per night in a dorm or at 2000 rubles per night in a double room.