What negative opinions ? ;)
We have local facebook pages in English, German or France and are ranked between 4,6 to 4,9/5. Have a look to Trustpilot too. We do not handle or enhance reviews as we do not pay third parties for such purpose. Come on guy, it seems you get confused with some competitors. The simple fact we respond to such post demonstrate we care more about our customers than you take time to check what you post :)