I stayed with Gary and Jefferson for 4 days, while attending a conference in downtown. This was my first AirBnB experience and it turned out to be wonderful. I had two beautiful rooms. A comfortable real bed, access to clean towels, lots of storage space and a generally very comfortable experience. Gary and Jefferson were most welcoming and excellent hosts. Their space and mine were far enough to be really private. Their location was also excellent - close to amazing food places on 18th and 19th streets.
They DO have blazing fast wifi so that's amazing!!! There are loads of toiletries near the bathroom so in case you forget something, don't worry!
The most amazing part of the home is their awesome art collection. Very gorgeous art pieces in your rooms as well as the corridor - makes it a very inspiring space! A little tip for you: when you walk down from BART at night, go down Mission and then use 18th/19th st. (instead of walking down 16th). Makes for a more interesting walk next to shops and restaurants, that are still open. Very beautiful neighborhood! I got a first hand experience of living in an awesome part of Mission - surrounded by amazing restaurants and historic churches and other buildings.

All in all, I loved my stay. And I'm sure you will too!