Considering this is the only Persian bakery I know of in Dusseldorf (and the first one I've ever…read morebeen to) I'm rating it 5 stars - simply because I have nothing to compare it to; Plus I love the exotic mix of nuts, rose and orange blossom water and powered sugar in my baked goods.
Of the 5 different items I ordered, everything seems to be freshly baked and really delicious. Unfortunately i can't remember the names, but it came with Persian chai (tea) which I consumed (all) in a matter of minutes. I noticed that some of the Persian desserts were very similar the Indian sweets I've had (e.g., Indian "jalebi" funnel cake, etc).
Definitely on my list of places to visit again.