For a month long stay, booked last minute, John's place worked really well. Compared to the prices I was seeing for other long term stays in SF, John's was a much better value. It's an old building, but well maintained. I was surprised at how much space there was. Plenty of storage. Bed was comfy. There was a desk for me to work at. Appliances were old but everything worked well. Parking is a bit tricky at times because of the school on the same block, but overall it's a great neighborhood: safe, walkable to multiple grocery stores, parks and LOTS of restaurants.
John is very friendly and responsive. The one issue I had was there was a bit of an ant problem (I think the last tenants just left food out), but John was able to get someone over to take care of it within a couple days.
I enjoyed my stay and I'd stay here again if I was in SF.