Should I leave a bad review for this restaurant?

I went to a small Cafe the serves really good burgers I went to a lot when I was a kid. They cook in the front so you can see everything they are doing. Well, I noticed the cooks weren't wearing gloves, and I noticed the dishwasher was walking around with dishes in his hands without gloves. Don't know If that's a big deal. Also, when the lady handed me my order, she headed me napkins, and there was a stain on them. I'm guessing from food that they were touching. I went home, and ate it then later had diarrhea. Not real bad but had to go a couple times within a pretty short period. Could have been food contamination, or just because my stomach wasn't used to the food.

Should I leave a bad review for this restaurant?
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