This is a converted basement, the stairs in the photos leads to a locked door (where the host lives). You can clearly hear the movements and footsteps of the host and his family above. The apt gets quite cold at night too; they do provide portable heater. I found the host to be slightly rude as well, refusing to repeat his instructions when we inquired.
I live in the city and rented the place for my folks, who didn’t get a good nights stay while visiting SF. They ended up moving in to our home. Note this because our experience seems to be quite different than other reviews.