I've noticed that pizza in Madison is honestly not that good in my opinion...but Grampa's is definitely one of the best, if not the best!
It's a little bit of a nicer place, which I did not expect! Definitely more of a sit down place, but I saw a few people grab pizza for takeout. Good place for a small group, but given that it's a very small place, I wouldn't go with more than a group of 5.
My friends and I had been trying to go to this place for a while - since it's so small, the wait gets incredibly long around peak dinner times. Try going at 5-5:30 if you want to go on weekends - shouldn't have to wait then!
So onto the pizza - it's thin crust and a little pricier than other pizza places. My friends and I got two appetizers and 3 pizzas for a group of 4, and it was a perfect amount. The Duck Confit appetizer was fairly impressive, and a standout pizza was the Brassacre.
I personally think Grampa's was better than Salvatore's Tomato Pies, which is often regarded as the best pizza place in Madison. If you want a fancier pizza, I would highly recommend this place!