My sister and I enjoyed staying at Christopher's place. Not knowing the area, it was further out than we had planned which made it take longer to get to London, but that is not Christopher's fault. The bus stop was just down the alley and was very convenient. There weren't many shops around so we had to get a few groceries delivered. We made great use of their washing machine and drying racks.
You check in by knocking on the next door to find Christopher, if it is not explicit enough. I don't know what would happen if they were not at home. All in All, a very nice accommodation and super nice people.