The house is as described, it was very clean and tidy when we arrived. Although it seems that the house is far from the city centre, it's within walking distance. If you don't feel like walking, there are buses that take you to the city centre within 5-10 minutes.
We couldn't meet David, but he sent us some SMS to be sure we had an emergency number where to call in case of any problem. Also, he sent us very clear instructions to get in the house as we arrived quite late in the evening.
Lovely house, fantastic city, I do recommend it.