Dolores Park Cafe is on the northeast corner of this Mission/Dolores area. The Mission District is filled with great coffee. Stanza, Four Barrel, Ritual are just some of the names.
This caters to the neighborhood and park visitors and has a broad menu of food items to choose from. It’s just a good place to hang out. Large windows let in plenty of light. The common tables are large and comfy. (Stools are heavy)
The coffee is very good. (SF just has very high standards for coffee). But if you want to talk coffee and geek out, this is probably not the place.