While watching the first episode of Bosch on Amazon Prime, I knew I had to find the alley where Bosch shot Flores. It looked so creepy in the rain (fake rain for filming, but still rain). I checked google maps, starting at Mariachi Plaza, and it didn't take long to locate it. A couple of days later, I headed out to see it in person. In the daylight, it wasn't nearly as spooky.
The stone by the sidewalk is how I found it.
This is where they turned and walked into the alley.
Closer look in the alley