This is open to abuse and resulting legal backlash from affected properties. What is it that prevents me from submitting a bug report for a W hotel?
In the next while I'm going to implement accounts for building managers to be able to flag and remove comments under certain restrictions. I'm hoping this provides people with an easy way to remove fraudulent claims.
You should look into how tripadvisor deals with hotels. I believe there's been lawsuits, but the tripadvisor is powerful.