I stayed at Club Quarters and also attended a training their for work. The facility was great for our meeting (20 +/- people), and also has space available for officing out of on a regular basis. It looks like at least one if not two companies lease office space located in the bottom floor of the building.
The location is great, but they don't have a parking garage associated with the hotel. You can find parking directly across from the hotel for about $33/day.
They have a complimentary coffee bar and light breakfast snacks available in their common area on the lobby floor. The common area has numerous chairs conducive to meeting a group or working on a laptop. There are many electric plugs available.
The bed was very comfortable and the room was clean. It is quite small, but that's something I expected given that the hotel is located in downtown SF. The room, however, doesn't have a bath. Standing shower only.
We found a great place to have breakfast called Il Massimo (www.888massimo.com) It's directly behind the hotel - just take a left out of the front doors of Club Quarters, take a left at the corner and another left, so you do a 180 basically. The owner is amazing - meals are prepared fresh daily. She even makes her own bread at the restaurant!More