Thanks for the compliments, but I can't really answer that. They all have their merits.
Maybe I’d go with Sanssouci and Heiderand. Sanssouci because it’s a great venue that’s worth a visit in its own right. Plus, the food is excellent. Heiderand is quite down-to-earth, more of a tavern with good food. But elements and Genuss Atelier are also great, though I’d lean more toward elements. Sanssouci is the farthest from the city center, if that matters. It’s also the most expensive.