My wife and I have been going to Baie Rouge for years. It is one of the nicest and quietest beaches on the island. In regard to Gus. He was always pleasant and all those who worked for him were very nice and good to all who visited. As for whether he is operating legal or not is a non-starter as it seems to be an issue for some on this thread.
He never bothered anyone and if he wasn't operating legally, there was no harm to persons or property owners. He was giving visitors what they wanted. He saw an opportunity and ran with it. If anything, he has been an asset to all who visit the beach. He keeps an eye on those who park in the lot and prevents break-ins.
The problem with the villa owners is they are worried about the element invading what they consider "their" beach. If you look at the average beach goer to Rouge they are just there to enjoy the beach. What they should worry about is the beach pervs who go to look at top-free females. Let's call it for what it is. The owners don't like this and would love nothing more than to privatize the beach and keep the tourists and locals out. Just because they may have the money, they want to buy the political power. Should and if the government does interfere with Gus' operation and attempt to impose the will of some owners, then they are doing harm to themselves, the livelihood of the citizens and the economic power of the tourism industry. The government should go after the real criminals starting within the few that may be within their own ranks.