OK, so I know that people are searching the internet for more information on learning Indonesian in Indonesia… and specifically the contact details of the language school IMLAC in Bandung. Well, here they are.
Address: IMLAC, Jalan Gunung Agung No. 16, Bandung 40142, Jawa Barat, Indonesia
My advice is to contact Maria via email. She is the office manager and can help with visas, visa advice, schedules, costs etc. These are the contact details for the office in Bandung, but Maria can put you in touch with the other offices (eg Salatiga) if you need those details. Maria can speak English, so don’t worry about any language barrier. Note: These details were correct as of 2012, but IMLAC now has a website which might be more up to date.
A brief note on costs. You can get away with about 4,000,000 rupiah (US$440) per month per person when living here in Bandung and studying at IMLAC. That is the costs of visa, tuition, rent and food. You can probably do it slightly cheaper, most will spend more than that (mainly to eat at restaurants, hire a maid, do fun stuff, buy nice things).
Happy to field questions.