Review for Diamond Jo Casino Dubuque Review For Tree Bar Google User Jun 14 '18 at 18:57 Great place! We had a very good time. It smelled really nice despite that it is a smoking facility. We saw at least 3 people win more than $2000 in the few hours we were there. They could have used a couple of more cocktail waitresses as it was frustrating when you wanted a drink but didn't want to leave the machine. View full site to comment or like