James' place was very clean and nicely appointed. If you are looking for a private residence out of town, this is a great choice. Blackheath is a lovely area, with lots of nice restaurants and a Sunday farmer's market. It is walking distance to Greenwich park.
A few clarifications on the posting for those unfamiliar with the London area, as we were:
-It is true that the flat is about 20-30 minutes via overground train into central London (London Bridge or Charing Cross station). However, from there you will need to change to the tube system to get around London. You will need to change trains, sometimes several times. It will usually take at least an hour to get to a central London destination from the flat because of this.
-Floors on buildings are numbered 0, 1, 2, ... in England. American visitors, expect that the flat is on the fourth floor, not the third.
Regarding the flat:
It is very clean, with new interiors. There is a washer/dryer and dishwasher, which was nice. Wifi is very good. The bed is a queen size. However, it is a Murphy bed (folds out from the wall). We found it somewhat uncomfortable as compared to a regular bed.
We did have a few small chores to do upon arrival, such as finishing a load of sheets that were still in the washer and throwing away some rotten food in the fridge. However, overall the flat was in great condition and ready for guests.
Regarding the host:
We never actually met the host; he left the flat unlocked for when we arrived and asked us to put the keys through the mail slot when we left. However, he responded to AirBnB messages quickly.