Overall this was a lovely place to stay for a week in London. The location is pretty great for the price -- a very short walk to the tube, and on the most direct line to get pretty much anywhere. The neighborhood was nice and quiet, with a couple nice cafe's for late night meals.

We had two nitpicky complaints, which for the price were understandable, but which I'd consider before booking again (especially the first).
-the bed is a futon with a twin mattress, and a thin (maybe 12") mattress type thing that fits in next to the twin to make it a bit wider. This was key since there were two of us sharing the bed. But the additional mattress lay solidly below the twin mattress, and no matter how we shifted someone was always laying with half their body above the other half. I found this so uncomfortable after 3 nights that I made my husband take that spot the rest of the time. It would have been perfectly fine for one person, but gave one of us a restless sleep since we were sharing an uneven bed.
-the other disappointment was in the bathroom. We were given two thin towels, both smelling like cigarette smoke. Both had definitely seen better days, but one (the blue one) was simply unusable. It was so ratty and scratchy it felt too gross to use. We actually considered buying a new towel for our stay, but ended up just sharing the green one.

Again, very pleasant place considering the price -- really the best we found.