Personally, I would go to a coffee shop that has a very chill vibe that has enough outlets and great food for me to hang out and work for hours. Been looking for a shop like that lately but haven't really been able to find one besides waves or Starbucks.
Being a marketer, I would definitely say that you want to have at least one thing in your store that is sort of "gimmicky". Create a social media campaign focused on this one thing months before your store opens and it will be packed. Look at Catfe for example, they have a progress bar showing exactly when they are going to be open so people can follow them in somewhat real time, and their idea is gimmicky enough that they have over 8k followers BEFORE they even open! Other examples would be soft peaks and 720 sweets. Social media is here for a reason, utilize it to its fullest potential!
Goodluck and definitely let us know when it opens! I'll be one of the first customers!
