If there is a reason that small business do extremely well in customer service then Bageltowne Deli is an excellent example.
Located at 9749 Traville Gateway Dr, Rockville 20850 the y have great coffee and excellent NY style deli sandwiches.
They have been successful in this Traville Gateway Mall where other eateries have not fared well. Of Cava us another example of success a well.
I am giving this place a ranking of must visit for coffee