There is a hostel in the Marin Headlands - beautiful and quiet but appropriate if you are hiking, not seeing San Francisco. (www.norcalhostels.org/marin). Otherwise, there are hostels in San Francisco, not necessarily in the nicest parts of town, but see attached.
USA Hostels San Francisco
www.usahostels.com - (415) 440-5600 - 122 reviews
AYH-American Youth Hostels
www.hiusa.org - (301) 495-1240 - 134 reviews
Green Tortoise Hostel
www.greentortoise.com - (415) 834-1000 - 170 reviews
www.adelaidehostel.com - (415) 441-2261 - 175 reviews
Pacific Tradewinds Hostel
san-francisco-hostel.com - (415) 433-7970 - 116 reviews
Hostelling International-San Francisco Fisherman's Wharf
sfhostels.com - (415) 771-7277 - 76 reviews
Union Square Backpackers Hostel
maps.google.com - (415) 775-7506 - 34 reviews
V. Willock about 7 years ago
Don't forget the Green Tortoise on the cnr of Columbus and Broadway - my favorite.
http://www.greentortoise.com/san-francisco-hostel/index.php about 7 years ago
I stayed in the Green Tortoise (on Ian's recommendation!) in 2007 and it was great - really well located to ChinaTown and other dining, walking to the major sights and the Pier area. about 7 years agoAnswered by Christie Carless via Travellr.com
Most hostels are close to Union Square (BART/Muni Metro: Powell). There are also hostels in Chinatown (Pacific Tradewinds), the Mission District (Elements), North Beach (Green Tortoise) and near Fishermans Wharf (HI Fishermans Wharf). Outside the city limits you'll find hostels in Berkeley and Marin Headlands.
For atmosphere, my picks are Green Tortoise or Pacific Tradewinds.
http://www.bug.co.uk/reviews/hostels/Americas/North-America/United-States-of-America/West-Coast/California/San-Francisco/index.htm almost 7 years ago
Yelp is a good resource for finding hostels.
so are websites specifically dedicated to finding hostels - http://www.hostelworld.com/index.php?affiliate=uleesgold almost 6 years agoAnswered by dan via Travellr.com