My friend and I are two twenty-something girls backpacking through Europe for a month and London was the last stop on our trip. We were there over a weekend so we wanted to stay in the trendy Shoreditch area because we had heard it had good nightlife. We booked Miller and Lian's place only a day in advance and they were very helpful with the process. Once they had accepted my request, they immediately sent me check-in information and the name and number of their flat mate, Simon, to get in touch with since they were not going to be available for check-in. They also sent instructions on how to get to the flat, which we had no trouble finding. It was about a ten minute walk from the Old Street station which was no problem. Note that the flat is on the third floor with no lift which was perfectly fine for us but may not be for someone who has trouble with stairs.
Simon greeted us and showed us around the flat and was very kind and welcoming. There were at least one (maybe two?) other flat mates also there but we only met and saw them very briefly as we just slept in the room and didn't spend much time there otherwise since we were out exploring. The flat and room are true to the photos.