After the search in Trip Advisor and other resources, the services of Luis have been the best choice.
As a guide and unlike any other tour that can be achieved in a travel agency, he will design the tour at to your taste and "interest" (what do ypou like, what do you do, what are you expecting). If you have a planned route, he will make some suggestions.
During the tour, he takes to you to particular sites (local markets, per example), that will be very few visited in a standard tour.
Visit their page: www.riotourguide4u.com