This review probably isn't indicative of a 'full' experience here, since I stopped in on Christmas Eve and only tried a single dish. Overall the service was nothing bad, nothing great. My guest and I were seated quickly and picked a prime seat to overlook Liberty Avenue from. It was unseasonably warm, so the front store window was wide open. It definitely offers a beautiful view of Downtown.
We both had the pork belly ramen, which costs about $14. I felt the price was reasonable given the quality of the ingredients, as well as the portion size. (I was definitely full from the single meal.)
From what I could tell, they offer a 'dim sum cart' where you select whatever combo of pre-meal bites you'd like, probably to share with other diners. It's a fairly community-oriented setup, with small, communal-style tables, so I didn't feel like I got the full experience just going with one friend.
The menu is limited but this is clearly because of the small plate emphasis and quality ingredients. Since I live in the North Hills, and am usually not willing to drive all the way to Oakland or Squirrel Hill to get decent ramen, Grit & Grace will probably be my new place to do so if I'm stopping by Downtown anyhow. Pretty satisfying all around!