A little (well, not so little) gem of a hostel with excellent staff and facilities!
The rooms are quiet, clean, and all come with an en suite bathroom. No out-of-hours check-in means you don't have to put up with your roommates moving and settling in the middle of the night.
A fully equipped kitchen, plenty of communal areas, garden with a jacuzzi, cinema room, and much more, make your stay a 5* experience.
Location: All the shops you might wish for are just a few minutes' walk away. A 15-minute train ride from Catford Bridge will take you right into the very heart of London.
I cannot recommend EBS Hostel highly enough. I wish I had discovered it much earlier.