Meg, we stay with Dh's family in the village in Bali...

Including MIL's family home in the mountains, I have only ever taken a weeks worth of malaria tablets about 13yrs ahgo on my first trip to Bali & I hallucinated big time & so threw them away, I since smother the kids in Mozzie repellant & use the plug in things in their rooms etc & in the mountains use Mozzies nets! they still get a bite here & there but never been ill..

I know there's a insect repellant in Camping shops called Bushmans or something (I havent ever used it) but it's what our Soldiers apparently use???
I am not sure of the ingredients so it might be worth checking it out... Maybe look up natural ways to ward off Mozzies like Garlic or wearing dark clothing etc as well..

Have a GREAT trip....