Mark was gracious enough to allow us to check in after his posted time on AirBnB and we arrived to a wonderfully clean and warm environment. His detailed directions were extremely helpful in getting us to the correct place and in getting around. Being a first time user of AirBnB, I was nervous of what to expect, however was pleasantly surprised to find it a "home away from home" experience without the hassles and harassment of staying in a hotel. Our stay made our visit that much more of a greater experience for our first visit to San Francisco!! Thank you Mark!!!