On the positive side: the location is practical for visiting SF highlights, and the neighbourhood, though it has a slightly rough edge to it, has many inexpensive decent eateries. Laundrette just round the corner in Brainwash. Wi-fi is good and reliable. The owner seems to be a nice person though we didn't interact very much as we remained quite independent but she was ready to help if necessary.
However there were quite a few things we didn't like in this apartment. First, the complete lack of window curtains or blinds (despite having big windows, from the ceiling to the floor): as a result, we woke up at 6am with daylight and we didn't really feel we had privacy. Second, the only way to enter the room was via the garage (the front door of the house broke down when we were there so we had to enter via the garage anyway but even if the front door worked, you have to pass through the garage after getting into the house). The garage has a very unpleasant stale smell, which unfortunately permeated into the room. This, plus the fact that the room is located a few steps below the floor level from the garage, created un unpleasant impression we were staying in some kind of basement. The room overlooks a yard with the garden which remains in deep shade all day (covered in dead leaves and a little swarm of insects always present in it so you don't really feel like hanging out there), which adds to the overall dampness of air. Thirdly, cleanliness/ tidiness: as a writer and a literature specialist I was attracted to the big library but the space is cluttered with many other things which gather dust and leave little space for guests' stuff (on the floor, on the desk or in the bathroom). It seems this room serves a bit as the extension of the garage in terms of storage. There were spider webs on the ceiling and on windows and we had to get rid of quite a few spiders. Also, when we tried to make a hot drink, we discovered an old coffee portion in the coffee machine, so it hasn't been cleaned after previous guests.
I realise SF is a very expensive city but I just don't think this was good value for money and a pleasant place to stay. I've been travelling and staying in Airbnb accommodation for a few months now and this is the first negative review I have ever written.