Hello,
I’ve found this Rose, Floribunda/Grandiflora habit. Newer canes or Geiltriebe/Wasserschosse (idk the english equivalent) are a little bit more heavily and classically red-thorned.
Big flowers, outer (or even most) petals are white striped and more purplish changing to a crimson-red towards the heart. They seemingly we’re holding up well as it was quite hot and sometimes rainy the last days. I haven’t ruled out Gräfin Diana as the location of this one may offer a little more protection as the one I know. She may have less pressure from other Roses here and thus perform better, but something’s off.
The fragrance was on the stronger site, it’s a Floribunda-like citrus-y smell. Grave is from 2015, if that’s any help.
I can provide more photos but I’ll post the flowers for now.