Kathryn's place was private, clean, and well located. She was also very helpful, and the space itself was well stocked in case you forgot anything. The outdoor space was really pleasant, although it might be chilly depending on the weather. There were board games, TVs w/ Roku, and information on local attractions that prevented boredom. We weren't traveling for pleasure, but it was an excellent experience, and I would come back anytime.
One thing to note-- other than the outdoor space, the only other sitting area outside of the two bedrooms is a single high-top dining table. We're pretty young and relatively fit, so we sat on the high chairs while eating and even hung out on the floor to play a board game; however, for older people or people with special needs, it might be less accessible. Still, given that San Francisco places a premium on square footage, I think the furniture and seating options were appropriate.
In all, it was a great base of operations to prepare for our day and return to at night for some much needed rest!