San Francisco has a lot of restaurants at many different budget levels. You can easily get lunch for $10-$15 USD within 1-2 blocks of the Hilton Union Square.
Key: Veg=Vegetarian options, V=Vegan options, GF=Gluten Free options
Bandit (American food, Veg, V) - Open 7 Days a Week 8AM–2PM, 5–9:30PM. 683 Geary St, San Francisco, CA 94102 (.3 mile from the Hilton hotel) - Menu
Brenda's French Soul Food (New Orleans style food, Veg, V) - Open Thursday – Monday: 8am – 8pm. 652 Polk St, San Francisco, CA 94102 (.6 mile from the Hilton hotel) - Website/Menus
Chutney Restaurant (Indian food, Veg) - Open 7 Days a Week 12-10PM. 511 Jones St, San Francisco, CA 94102 (.1 mile from the Hilton hotel) - Menu
Delarosa (Italian food, Veg, V, GF) - Open 7 Days a Week 11:30am - 9pm. 37 Yerba Buena Ln, San Francisco, CA 94103 (.4 mile from the Hilton hotel) - Menu
El Tesoro Taqueria & Grill (Mexican food, Veg) - Open 7 Days a Week 10:00AM - 12:00AM. 511 Jones St, San Francisco, CA 94102 (.2 mile from the Hilton hotel) - Menu
Grubstake Diner (American/Portuguese, Veg) - Open 7 Days a Week 6:30PM-3AM. 1525 Pine St, San Francisco, CA 94109 (.8 mile from the Hilton hotel) - Menu
Kusina ni Tess (Filipino food, Veg) - Open Monday-Friday: 8am-2pm. 237 Ellis St, San Francisco, CA 94102 (.2 mile from the Hilton hotel) - Menu
Lemonade (Health food, Veg, V, GF) - Open 7 Days a Week 10am – 9pm. 781 Mission St, San Francisco, CA 94103 (.5 mile from the Hilton hotel) - Menu
Little Delhi (Indian food, Veg) - Open 7 Days a Week - 83 Eddy St, San Francisco, CA 94102 (.2 mile from the Hilton hotel) - Menu
Pakwan Restaurant (Pakistani/Indian food, Veg) - Open 7 Days a Week 11:00 A.M. to 11:00 P.M. 501 O’Farrell St, San Francisco, CA 94102 (.1 mile from the Hilton hotel) - Menu
Sutter Pub & Restaurant (English & American, Veg) - Open 7 Days a Week 8AM-9:30PM. 700 Sutter St, San Francisco, CA 94109 (.2 mile from the Hilton hotel) - Menu
Yemen Kitchen (Middle Eastern food) - Open 7 Days a Week 11AM–8PM - 219 Jones St, San Francisco, CA 94102 (.3 mile from the Hilton hotel) - Menu
Here is a printable list of additional local Breakfast/Lunch/Dinner options at varying price points (with map) provided by the hotel.
Looking for a sit down dining experience with a bit more money to spend? Consider looking for options and making a reservation using one of these dining reservation Apps.