San Francisco's Opera Plaza is two blocks from the opera house and is near other civic amenities. The ground floor surrounding this fountain contains a deli, a cinema, some professional offices, a florist, and a Peet's coffee shop. The second floor also houses offices. Above that are several floors of condominium apartments.
For the fourth Nicole Tang Noonan mystery, I recently wrote a scene in which Nicole and Irene meet at the Peet's coffee house to compare notes on their joint investigation. The cafe is crowded, and they are concerned about sensitive information being over heard, so they move out to a bench near this fountain.
Since the action of this novel is set in November, the weather is chilly, they have to make it quick. There probably would not be flowers blooming in the planters.