John's place was lovely - we stayed there for the most part of a week, and it was super-close by to everything (Buckingham Palace, Westminster Abbey, London Eye etc.) It was also really close to Victoria Station, which helped during the few Tube strikes that occurred during our stay.
The apartment was very big, had no problems working or operating anything, but if we had, John was close by and really easy to get in contact with.
There were a few pubs nearby that did pretty good meals (I recommend the pulled-pork nachos at The Albert), and a cute little breakfast place too that did a huge English-style breakfast super cheap.
Overall, we enjoyed staying at John's place and would definitely stay here again. A wonderful place and a wonderful host.