Great place for a long stay in SF, particularly for work. The building is really close to public transit, the workout facilities are a nice touch when traveling, and the space has great style. I also loved the fact that they welcomed me with a bottle of wine!
My only constructive feedback - the room would shake a lot when other guests closed their doors. I'm not sure why it shaked so much but you could really feel it. That said, all the other amenities really made up for it.