Sometimes things go wrong. There was a minor communication issue involving a third party. Given it was a three-day weekend, she was out of town and we never met her. However, Kelly's handling of the situation was stellar, which I took as an indication of her thoughtfulness that also went into the design and maintenance of the flat.
I have stayed in many 5-star business hotels. I'd rather stay in a place like Kelly's. Extremely clean, bright, first-class fixtures and amenities, and the location worked very well for us. The temperature stayed at 72 degrees except when we opened the skylight and/or window at night, as we like it a bit cooler to sleep. There is no independent control, but the HVAC is very quiet. Contrast this with any number of hotels... We also liked the playful décor also, orange and all.
Two cautions, both having to do with steps. If you are healthy and up to walking the hills of SF, they are probably not an issue. A long two flights of stairs up to the flat; and a single low step, with an overhang, that runs the width of the area between the sitting room and the rest of the space. As my wife constantly reminds me, I am a klutz. I tripped on that step three times the first day before I learned. Be aware.