Hi Bart, OK, I will give it a go, even though I am not "technically qualified". I like all "good art", now there is a subjective statement of bias

However, I o admit to a preference to "impressionistic". There is something about allowing the viewer to build their own story but for them to do so, the "rules of nature" should be in place or our brains do not fully accept the depiction. Sometimes yes, but in most cases, the thing falls short unless the viewer is experienced enough to look beyond.
I feel this painting has as you say, a classically impressionistic quality, lent more so by the pastels. There is a looseness, but sufficient detail that importantly for my eyes at least (and most others I believe) that are in scale. By this I mean our brains try to fit the scale of a thing and anything "off" jars. Your values add to the depth and drama, the far hills acting as the defining contrast. You have nailed, intentionally or otherwise, the law of thirds, both vertically and horizontally. You also have hinted diagonals that lead into the painting from different directions, especially the foreground. And as Wayne would say - the values are pretty good.
The scene while "simple", draws one into a story. Finally, the colours are clean and not muddy. While I see your normally bright palette, this is "bright" but not overwhelming, and so fits the calmness of the scene. I like the hinted scrub and the trees, the buildings are suitably "unfocussed" adding to the depth.
In "The art of motorcycle maintenance", the author struggles to define "quality". Mostly focussed on writing, but the same question applies everywhere. What is quality? We instinctively know quality, but struggle to define it. I believe that artists have an "eye" that sees quality and they often try to depict it through their art, the same way a poet tries to define a scene through words, without destroying the moment. Its a fine balance, but sometimes the words or painting "sings".
I would like to think that you will keep this painting in a place, to remind you of how simple "sings", also, so you can occassionally, just enjoy it as most of us here do as well. Its a lovely, simple timeless painting, I like it and would happily hang it