I grew up in the Parma area and come back every so often to visit family. We found Southside Diner over Christmas break when we saw the reviews on Yelp. We now make it a point to go there for breakfast anytime we're up that way.
Definitely a unique breakfast experience from anything else in the area. He loves Corned Beef Hash and says this is one of the best he's ever had. I enjoy the "The Parma" in both an omelette and wrap. Portion sizes are perfect and we've had great food both times. There are many things on the menu we'd love to try.
The only downfall to this place is that it's tiny! Maybe 12 tables tops and it's not ideal for large groups. There Sis a bar you can sit and eat. Service has been great, especially for it being so busy and not a lot of space to work. We will most definitely be back that next time we're up that way!