Atmosphere: 3.5/5.0 (standard carryout-type place, some tables).
Price: 4.5/5.0 (lots of pizza and not for lots of money).
Location: 4.5/5.0 (easy to access, easy in and out).
Service: 3.5/5.0 (normal carryout service).
Taste: 7.5/10 (thin crust, solid flavor, pretty good).
Bottom Line: 23.5/30 for Grandma's Pizza - a respectable, above-average score for a classic to this area. Personally, Grandma's is one of my favorite places to get a thin crust pizza. Their Pepperoni, BLT, and "Lotza Meat" are sure to deliver on flavor.
They have another location on West Broad, but this was a standard carryout-type place with your normal service. Not overpriced, either. We got two larges and a medium and our bill was a few cents shy of $38 for five guys (minus drinks). Pretty solid pricing.
While Grandma's may not be #1, it has been around in Central Ohio long enough to earn a visit or two.