If you are on a super budget trying to stretch out a few bucks the Puriagung
homestay in Kuta, Bali might be what you are looking for. The singles
are 30,000 rupiah (around 3 USD per night).
It's nothing special but the staff is friendly enough and it's in a great location just up the alley from Lima Satu and off a side road to Legion Street.
If you are in Bali on your honeymoon this is obviously not what you are looking for but backpackers running low on funds this place works out pretty well.
Turn up the alley at TJ's Mexican restaurant on Poppies lane 1 and you will pass Lima Satu Cottages and Taman Ayu (a pretty nice homestay for 45,000 rupiah a night).
All the rooms are fan only but I am not that keen on airconditioning anyway.