123272 google maps - fix location

I have a client's site for which I need to fix Google Maps location for two businesses he has. Search google for: coral beach marbella it shows the google map link there. the location is not correct. how can we change that location? and move the place nearer the beach to its right location? He has another business he needs to change. I guess this should be a pretty easy task. Please, let me know if you can do this.