I reserved Sarah's AirBnB for my parents as it is near my own apartment and they were visiting San Francisco for the first time. They had a positive experience overall, the room was spacious and they appreciated having a private entrance. Sarah was a very communicative and welcoming host, giving my parents many details regarding how to access the lockbox, etc. in advance of their arrival in San Francisco.
My only comment is regarding her cleaning service. Upon checking in, my Mom did note that it was clear (due to smell and appearance) that the bed sheets had not been changed/ washed since the last guest had departed. While I do not attribute this to Sarah at all personally, but it did give them a less than ideal first impression. I would recommend that going forward, she inspect the room closely after each cleaning/ before check ins to make sure that all of the tasks have been completed by her maid service.
My parents really enjoyed chatting with Sarah and the house is perfectly situated to take advantage of Potrero Hill's unbeatable views. Take care when booking this location for elderly guests as there is a steep incline leading up to the house. Be sure that you arrive prepared to take on SF's trademark hills if you plan on coming to or from this residence by foot.