I've been to this place many times. I am surprised it doesn't have a higher rating, but I suspect it might be because it isn't particularly fancy. Yet, if you want some classic Thai food, this is my favorite place in town.
Sala is a cozy house they have turned into a restaurant. The family who owns it is super nice and they use all their own vegetables from their own garden. If they run out, or don't have enough, they supplement by buying from the Farmer's Market in town. This care to quality shows in the food. My husband and I have never had a bad experience. If we order take out they are always very fast. The food is always fresh tasting, spiced appropriately the way you prefer.
In a lot of ways, I think Sala is a hidden gem. It's affordable, friendly, fast and delicious with fresh flavor and good standards.