Definitely a cozy, neighborhood favorite.
This is a cute…read morelittle spot that offers classic sushi (a reasonably standard variety of nigiri, maki, handrolls, etc.) as well as having a Vietnamese menu adjusted for the German palate. (Nothing exotic - but very tasty!)
You can sit inside (or outside during the warm months, by the water fountain in the Atrium courtyard), or easily take-away, which seems to be a lot of their business.
As far as Rosenheim goes, this is probably your best option for sushi.
The Vietnamese dishes are tasty but rather typical for "German-style Asian food"..
I definitely enjoy a nice bowl of their Pho on a chilly evening. (It's rather uncomplicated and not served with many options, but it's done right: the meat is very tender and the broth is savory and satisfying!)
The people there are always quite friendly, patient, and helpful.. and it's very reasonably priced!