Nestled between the Golden State Freeway and the Los Angeles River, Elysian Valley — also known as Frogtown because of the western toads that once inundated the residential streets — often has been described as an “isolated” urban community. Geographically speaking, that makes sense. But if you spend time in the 3-mile-long neighborhood, where businesses and homes butt against one another, you’ll see people from all over town flocking to the river-adjacent area. And for good reason. “We used to feel like we were this somewhat remote outpost,” said architect Tracy Stone, president of the Elysian Valley Arts Collective, who has lived there for 20 years. “You have to come here deliberately. When outward-facing places like Wax Paper opened in 2016, I thought, ‘Who will come here?’ Much to my amazement and delight, they proved it’s possible.” Indeed. On a recent Saturday morning, a long line of bicyclists, couples with dogs and families waited patiently for coffee at La Colombe Coffee Roasters on the Elysian Valley Bicycle & Pedestrian Path, a 7-mile stretch along the …