If you come for Sunday morning breakfast, be prepared to wait for a seat (my boyfriend and I waited about 30-40 minutes). But trust me, the wait is worth it. Frank's Diner must be the cutest diner I've been too. Buzzing atmosphere with oldies music providing great background noise. They're very accommodating to gluten allergies, and food arrived in a timely manner. Staff was polite and made sure everyone was happy. Large portions of hash browns, waffles, and other goodies. The highlight for me was the gluten free bread used for my BLT and that my hash browns weren't drenched in oil. They have many items that can be made gluten free. Pancakes, oatmeal, sandwiches, and so on. Even on the menu there's a note that they aren't a dedicated GF spot but to let the server know and they'll take extra care preparing your food. If I ever find myself in Spokane again, I'll definitely make another stop at Frank's Diner. Plus, the morning after I had no signs of cross contamination.