This hostel is by far the cleanest and nicest I have stayed in so far on my travels around Europe. The staff was great, everything was spotless, the WiFi was reliable, and there were large lockers for everyone. It is located about 35 minutes from the train station by foot, but if you take the tram it is less than a ten minute walk from the station. The area is well-lit and felt very safe. Highly recommended!
Beautiful bar downstairs! Blue Sky is in the same building as the Railway Tavern (I almost missed it!) The location is fine if you have plans in South London or would like to be a bit removed from the main areas of the city, but I felt a bit isolated there. The nearest Tube stop is 1.5 miles away, but the bus runs right to the hostel and there is a train station just outside. Triple bunks threw me for a loop but were surprisingly secure. Clean & friendly overall.
Great location near Kensington Gardens and just a few minutes walk from the Lancaster Gate Tube stop. Safe, relatively clean, quiet location. Not much room for interacting with other guests, but a good place to stay if you're just looking for a safe place to sleep in London.