Bex contacted us right away, and we never had any issues with the booking. Instructions were very clear, and her neighbour met us with the key when we arrived.
The flat was very spacious for London and, for the most part, quiet. (A near by train made some noise, but after a while you get used to it). The flat is near a lovely park, and the view of the canal from the windows was great. There is a deck off of both the kitchen and bedroom. I don't know what qualifies for a king size bed in Europe, but by north American standards, the bed was actually queen sized. It was comfortable, though.
Be prepared for the floor the creak, we didn't mind that too much. The bathtub was neat. It was super long, and deep. The hot water tank was not super hot, but warm enough for our needs. Cooking supplies were sufficient, coffee maker is a stove top Italian espresso maker.
All in all we had a great time in London, and the flat served it's purpose as a comfortable place to crash, and have breakfast in the morning. It may be a little ways away from central London (a little more walking) but it was worth it to have a quiet night's sleep, such a lovely view and the park nearby.