Mary's place is clean and comfortable and very convenient to downtown San Francisco. It's also quite spacious, and nice to have a small fridge and sink in the room (I believe there was coffee as well). The only reason this is not a five star review for me is that the lovely sunny top floor space gets super hot and is hard to cool. I opened the window and door as soon as I arrived around 7:30pm, and it was still too warm for sleeping when I went to bed at 10:30pm. Mary has a nice Dyson fan in there, which I used, but I honestly can't imagine staying there in the summertime. One more note: there is a step down from the bedroom area on the way to the bathroom, which can be tricky at night.
Shared bathroom is not my favorite, but it's well set up, and worked out fine.