The owner needs to stay on top of the cleaning. Crumbs on the floor and a very, very dirty oven. There was a lot of dust under the beds and dust on shelves/etc. No top sheets on any of the beds which we found very strange. Yes, you can get downtown on Bart but it's a haul - the timetable said 1 ½ hours, so I would not say convenient.
If he stays on top of cleaning and put some cover sheets on the beds this would be a fair place to stay for a SF visit.
Nice, safe neighborhood.