I have visited Papa G's on 2 occaisons, and had a great experience both times!
1st visit: A friend and I were milling about Port Credit and stopped in for a bite. We got a veggie pizza to share and she also got a caesar salad. The pizza was so great, and the salad came in a very generous portion.
2nd visit: Visited for dinner on the long weekend with 5 friends, we were told there would be about a 30 minute wait but didn't mind waiting. We really only had to wait about 15 minutes and we were lucky enough to score a spot on the super cute back patio. I ordered the pizza again and loved it, and a few of my friends got the meatball sandwich (the meatballs are HUGE) and the veal parm, which were both well recieved.
The service is a little slower than anticipated, but the food is good! I would totally go back to this spot a 3rd time when in Port Credit :)