Blue Danube in San Francisco

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Small coffee shop with good sandwiches and a few sidewalk tables. Computers and paid wi-fi available. Cash only.
Hours: M-Th, Su 7AM-10PM, F-Sa 7AM-11PM
Address: 306 Clement Street
Directions: at 4th Ave
Phone: +1 415 221-9041

Source wikitravel.org/en/San Francisco/The Avenues