Wonderful stay in SF. Marks apartment was far more spacious than we expected. 3 adults and a baby stayed there very comfortably. Only thing to consider if you have any problems with your health is that it is up a few steps to the front door. Wouldn't be a problem at all for those of good health. An update from a previous reviewer...there is now a full length mirror in the apartment - very helpful.
Mark was great with communication and friendly when we saw him in passing. Would certainly stay there again and recommend it to others.