If you want to make a trek to the Batur volcano in order to meet the sunrise. It is best to spend the night at the foot of the volcano. Since the rise begins at 4 am, in order to be in time for dawn at 6 o'clock.
We booked a hotel, when we arrived, it turned out instead of a beach - a garbage dump both on the shore and at the bottom of the sea. Not like swimming, looking towards the sea is sickening.