I've never stayed in an airbnb before, but I have a feeling Jefferson's home was better than average. His place is as beautiful as the pictures. I wasn't able to hang around much due to work, but it was easy to sit back and relax once I was done. Jefferson was really helpful when it came to transportation and nearby hot spots-- even having a binder full of great information on the San Francisco area for me to look through.
The area can be a bit sketchy across the street, but mainly people keeping to themselves. I wouldn't worry about anyone giving you a hard time. Amenities like the bathroom shower and kitchen were a little tech-advanced, but Jefferson did a great job leaving behind instructions and showing how to use them. Overall, I had a great experience in San Francisco and in his home.