Suppose the OP had been able to speak with the owner, at the time of his departure, to express his dissatisfaction. Suppose the owner apologized and offered to refund X amount of money as compensation for the poor experience. I'm sure the OP would gladly have taken the offer. Is it considered a bribe if the business offers some sort of compensation/service recovery in exchange for your good will? Or is it only a bribe if the business expects something in return?

The thing is, I believe in communicating with the manager/owner directly, giving them a chance to make things right even when I am not seeking compensation of any sort, merely pointing out some deficiencies that need some attention. They can't fix it if they don't know that it's broken. I don't typically write a bad review unless I've communicated with them and didn't like the response- or didn't get one.