We chose Sunday brunch last week when my in-laws were visiting based on location (inside Hotel Monteleone) and their drink special (up to two $0.75 French 75s per guest). I was delighted to learn Susanne Ortner, a fantastic musician I usually catch at Capulet, performs Sundays at Criollo.
I would not say it was a "super wow" gluten free experience, but my requests were taken seriously, and I safely ate some MEGA DELICIOUS shrimp and grits. If I find myself back there for brunch again, I will order those again.