It's good because it's simple. Loosely packed fresh beef ground on site, normal toppings and buns, nothing too sophisticated. It's all the little mods to the burgers that makes this place great. Grilled cheese buns. Blue cheese crumble and bacon, the cheese stuffed portobello mushroom option - highly recommend for burger lovers.
Update on October 31st, 2014:
-Although great, the prices are extravagantly high for something that is really quite simple. I don't believe the menu items are fairly priced, and thus I am reducing my star rating by 1.