So you want to speak in Bahasa Indonesia ? you might check this website for reference BIPA UNUD or the Faculty of Letters Universitas Udayana , Bali- Indonesia was founded in 1958. It was four years earlier than the University itself which was founded in 1962.
BIPA UNUD has earned their reputation over the years for the quality of education and cultural studies in Bali.
BIPA is a Non-Degree Program. It is established to help foreign people learn the Indonesian Language and culture of Indonesia both receptively and productively.
Please check their website at http://www.bipaunud.org for more information about their programs.