I stayed in one of the larger dorms, and despite people coming at all hours it was still clean and safe. The bathrooms were plentiful and also clean. The pub downstairs has plenty of great competitions and drink deals, and is always pretty full.
I stayed here as a single-female, travelling alone, and would happily recommend to others in a similar situation - something I wouldn't necessarily do for other hostels in London.
St. Christopher's Village Hostel is located near London's famous London Bridge, and is just a short stroll from a number of attractions and tube stations. For more information on this establishment, please see the website.