How to know if a location is good for my new Ice Cream Business? Any advice?

Hello to you all. 
 
I am new here 
 
I am thinking of opening my own ice cream place (i won't burden with too many details) in Los Angeles. 
 
I was wondering though, how do you know if a location (which I have in mind) is GOOD ENOUGH? 
I am assuming that by foot traffic - and the more, the better. 
 
But still, it's kind'a hard to know. 
 
Any advice will be much appreciated. 
 
Thanks