John's place is close to Kings Cross Station and is a good little basic bolthole for a stay in London. Note that you will need to climb 2 sets of stairs to get to the flat, and the hot water in the shower is a bit tricky. Costa Coffee is next door for your morning caffeine hit, and Honest Burgers is on the street corner for a good feed.
John's communication was as per his schedule and he was quite flexible with our arrival.