Pros: Mary is really nice and accommodating; place is sparkling clean; location is good, short walk to downtown, but far enough away from the bad areas
Cons: the shared bathroom situation is a bit awkward - two rooms have access to the bathroom via doors in their respective rooms, so you have to remember to unlock the other person's door to the bathroom every time you are done using the batheoom; my room happened to be on the top floor - the steps are steep so if you have a lot of luggage it might be hard; when I visited SF, they were struck with an unexpected heat wave - the top floor gets really hot with little airflow and no AC. Mary provides a fan, but even then the room at night is about 5-10 degrees warmer than the outside temperature, so it was very uncomfortable to sleep in. This heat wave does not occur often so I guess I might have gotten unlucky