Per Diem — a timeless lunch destination near the Financial District on Sutter St — knocks guests socks right off. A blue door surrounded by antique windows, wooden tables and fine lamps is very appealing and inviting. Open the doors and take a couple extra seconds to look around to appreciate the surroundings before continuing to walk inside. The upstairs is marvelous. Wooden floors that show its age, and the curtains tucking everyone in and some fancy chairs and tables. All surrounded by some books and a make-shift room… fit for a captain. Per Diem is a San Francisco spot that will become one memorable experience.  - Jordan Dietterich of Surfside, Florida