My wife and I spent a night in Flam during one of the hottest summers in Flam, so our review is colored towards that.
Accommodation-wise Heimly Pensjona is decent. The rooms are quite small, but the beds were comfortable with plenty of pillows. Our shower room however only had scalding hot water. During a very hot summer, this was very problematic. The wash sink had appropriate-temperature water. There was basically no air movement even with the windows wide open.
The place is fairly far out from the main Flam attractions -- about half-a-mile or so.
Breakfast was included and decent. Fairly typical Norwegian fare of fish, caviar, bread, hard-boiled eggs, etc.
I can't compare prices, as all other available hotels were unavailable by time we had booked. read more