I have to highlight these three recently opened restaurants in San Francisco that serve outstanding food and have very good service:
(1) Nombe: Japanese izakaya on Mission Street at 21st which serves Japanese small plates and an dazzling array of sake. I went back last night with friends because the last time I was there, they had not yet obtained their liquor license. Well, last night, we tried several types of sake from the very dry to the sweet-sublime. As usual the service was outstanding and the food very delicious (try the brussels sprouts, calamari, ahi tuna, pickled daikon). Read my earlier review of Nombe.
(2) Frances: I understand why the restaurant critic of the Financial Times fell head over heels in love with Frances: “Frances makes me a little crazy. I ate there for the first time just after it opened last month and booked to return straight away. After the second visit, I made an entire week’s worth of reservations, one every night, taking any available time slot.” The reviewer recommended the gnocchi and the beef.

Frances (Photo by Jennifer Yin)
http://www.mapplr.com/frances-luscious-mediterranean-inspired-dishes-san-francisco/
(3) Credo: my most recent find and indeed a gem in the Financial District of San Francisco, Credo serves Northern Italian cuisine in a large, beautiful airy space.