As professors with a university program based in Rome, we have been consistently impressed and delighted by the professionalism and expertise of Santiago and the services of the Yellow Sudmarine Tour company. Santiago guides Pompeii like a pro. He is intelligent, patient and cheerful. His commentary for city walking tours of Naples is equally excellent and his explanation of the symbolism of the Capella Sansevero is superb. His love and enthusiasm for Naples, its history and environs are infectious. It is a pleasure to recommend him most highly.