Another option Rent a room in a house. I agree best bet is to get there then see for yourself, the rates go down with someone that speaks the tongue,go with a native that understand the area. I have seen rooms in homes go as low as $7- per day with breakfast.I walked on foot up and down the neighborhood. Long distance searching specially enticing websites in english will cost you! Forget the Airco,use a ceiling fan open the window,All the times I have stayed in bali NO airco,Its Fine! you get used to it.Do bring your own mozzienet in case they dont have one in the room.(or you can buy them there)
Eat from the local foodstands,not the european sit down cafes,local food is cheaper better for you!Have a large 5gal water bottle delivered to your room from the grocery store,saves on money drinking all that bottled water. Enjoy your time!

You comment on wanting cleanliness: Funny.........................compared to what? When your in bali you are just going to have to get used to other ways to live.A animal entering in the room here and there,bugs,mozzies,ants,lizards,in cities. Monkeys -bats-dogs with ticks/fleas in the country villages. All these are NORMAL. When the electricity and water shuts off for days-no shower-no bath.