Gustavo Manzella is a Co-founder HolaSim at Phonerental. They is proficient in English. Colleagues describe them as "Gustavo tiene una vision bien definida y un gran conocimiento de las industrias de Viajes y Telecomunicaciones. Es muy efectivo para implementar planes de accion y no tiene miedo de arremangarse y empujar el carro para lograr sus objetivos. Fuen un gran placer trabajar con el en Phonerental" and "As owner of Phonerental USA, Mr. Gustavo Manzella has signed a partnership with Office System, Telephone Company in France. As former CFO of Office System, I had a business relationship with him for nearly four years. Friendly and serious at the same time, he is reliable and professional in managing his Company. Always prompt in replying to e-mails and calls, cooperative in solving problems, and punctual for financial matters, I would recommend him for business purposes with no doubts."