Jalan Pattimura RT 005 RW 002, Waikabubak Sumba Barat
Most importantly your passport, it has to be valid at least 6 months from the date of entry. If this is not the case you will not get a visa and you will have to return to the place you came from.
Health and travel insurance, in case you need to see a doctor it is very wise to have everything you need for the hospital close by. Often times, If something happens with you and you cannot prove you have an insurance or don’t have enough money to pay, the hospital will not even help you. Also travel insurance just in case your belongings get stolen or get damaged. This way you can often replace most of it, or at least get a part of the money back.