Warm thanks for sharing your experience and impressions !
I was also surprised by how the dry down turned out. Becasue of the difference in chemical compotision of the volatiles extracted outlined below I was somewhow intuitively / projectively not expecting it to be so evolutive & long lasting. It was really an excellent surprise.
Our usual offering, is made by cohobation (multiple cycles of gentle hydrodistillation of the same rose raw material combined).
In very short:
The first fraction, indeed made with fresh water, gives a different profile, more concentrated in lighter and much appreciated aromatic compounds like nerol, geraniol, citronellol contributing to its remarkable floral brightess and vibrancy, concentrated in top and heartnotes.
Some of rose's aromatic compounds are soluble in water to different degrees, so mutliple cycles allow to extract a maximum of those. The totum thus captures a fuller specturm of compounds : components absent form the first run due to their water solubility as well as heavier volatiles, and compounds remaining in the petals themselves after the first cycle, resulting in a more rounded profile, with added depth and complexity... and much more yield.
Both are pristine in their rosiness, very powerful, long lasting and without off notes, because of the care at all stages of orchard management, harvest, etc. which also play a significant role for the overall quality of rose oils, and of course, the mutlifactorial care in the distillation process. Both are a joy (to me at least) as a "wear alone experience" lasting several hours - and evolving - on skin, as well as interesting for perfume composition: they are just different beasts.
Regional types seem mostly relevant when rose oil is done following a clear traditional way, matching the local cultivars, the terroir and climate, the traditional ways of cultivating, harvesting... and, centrally, of all the different paramteres involved in distillation set up and process. We did research a lot to combine knowledge from different experiences (different traditions, scientific sources, try outs & refinement of the process) to develop our thing so it would makes sense that is not easily pinned as this or that
It is also important to note that a few hundred metres of altitude difference, relative dryness / humidity / max and min of temperatures, differences in the composition of the soil and water sources can already change a lot of things even within a small "region"... just like with ouds and many (if not most ?) quality artisan aromatics, types / geographical labels do only tell part of the story and can even be misleading in some instances.