During a recent trip to Bali from the United States, we had a group of seven people that stayed overnight at Mapa Lake View Bungalow prior to hiking Mount Batur.
The accommodations were fine for our purposes, the price was VERY reasonable, the staff was very friendly and we enjoyed our breakfast there in their kitchen (included).
A word of warning: the location is in a farm/village beside the lake so there a LOT of flies in the area. The staff warned us so we immediately closed our doors upon entering our rooms.
Also the roosters and scooters of the Mt Batur guides are loud in the morning, but that's a small price to pay for the great location.
The free breakfast was tasty!More