This is one of the nicest HI I stayed in. Love the location and the entire property is beautiful and comfortable.
I've choosen HI-Los Angeles-South Bay mostly because of it's location - wanted a place to have a rest doing nothing :) And it worked extremely well: the hostel is very quiet, no parties and nobody try to socialize too much :) and staff is very, very friendly and helpfull. Free breakfast is good plus you can buy some eggs if you can't eat carbs any more))
I like San Pedro as well. The only problem I had got - didn't realize how huge is the city of LA! Next time I'll drive :)