There aren't many good Sushi places around the Heidelberg / Mannheim area. Most are cheap and low…read morequality, like KOI in HD.
This however is a really good Sushi place!
Fish was pretty good quality, years better than most other places around (yet not as good as in coastal town, no surprise though).
The cuts of fish were pretty good sized, not that super thin crap you get at the cheap places where it's mostly rice.
The mini round river with boats and Sushi on top at the central bar was really cute.
We ordered off the menu though, got the second largest Set with sashimi, nigiri, rolls...
Everything was delicious, especially loved the one roll and their thick sashimi pieces.
Added 2 maki rolls and one handroll, also all very good.
We were both full at the end of the meal.
Food plus 1 bottle of water came out at €54.
So basically €27/person for great sushi, definitely fair price and totally worth it.
It's not a huge place, I can see it get really busy on the weekends so you might want to make a reservation. We were there during the week for dinner and it was about 2/3rds full.
I will definitely be back!