I've spent 2 weeks in the apartment (should call it a room due to it's size). It is pretty quiet space and bed is super comfy. There is a big bathroom (the size probably half of the room:)) with all you need.
There are couple downsides of the place. It is pretty dark, one standard size window that goes to the inner yard and some small glasses in the front door. When I was in the room during the day sometimes I has to turn on the table lamp. Also there are not many surfaces, if you are not alone it will not be very comfortable to have a breakfast or a small dinner, there is a small table and small place on top of low cupboard and this is it.
I like Japantown and that's why I chose this location specifically, but actually I found out it's pretty good in different ways, day pass in a bus is just 5 bucks and you can be in tens of minutes anywhere, Fishermans warf, Ocean beach, Market street or at the Yacht harbor.
The owner is supernice, you can ask anything and she will try to help you as much as she can. This lady is great.