This is one of the places that you have to try in order to call yourself a "Clevelander". It's best known for having the best & biggest corned beef in Cleveland. This is a smallish sit down restaurant, but there's nothing fancy inside; no-frills decor and typical of an 80s diner. The only thing I've had here was of course the corned beef sandwich.
So how big is the sandwich? It's massive, I would say a good pound of slice corned beef, in between two pieces of rye bread. It's piled about 4-5" high. You'll definitely want to knife and fork it. I'd be impressed if you can actually take a bite at it. The flavor from the meat is very good and wasn't dry or too fatty. I also had a side of coleslaw and fries. They were OK, but it complements the corned beef with a bit of veggies. You won't come here for that anyhow, so you shouldn't be disappointed if these were a let down.
However, the prices have gone up at this place in the last few years, but at $12 a sandwich, its worth it for the experience and to proudly say that you've eaten at Slyman's!