For some locations, a street address is not available or not practical for the placement of the coffee shop's location. In such cases, it's useful to allow a user to place a marker on a map to indicate location.

For myself in particular, I would like to add a shop that is in Tianjin, China, but the address is not compatible with the system's pre-designed address system, so it would be easier for me to just be able to place the location marker on a map on my own.