Jim's

Jim's was a café in San Antonio, Texas. Raymond Leinster went to Jim's shortly after his first encounter with Mister Cold in the labyrinth, interacting with the waitress. However, realising he'd forgotten "something" in the cave, he left in a hurry and drove back there. (PROSE: Golden Age)

Todd Calavero went to Jim's off of Broadway on his way to McAllister Park to eat chicken fried steak and get his mind off of the fact that his wife couldn't remember him. (PROSE: Against Nature)

Behind the scenes
Jim's is a chain restaurant in San Antonio, and there are two on Broadway. However, given that Todd intended to go to McAllister Park, we can infer that this is the likely location of the one he went to.