Putting raw fish on a piece of rice does not make sushi. But here it seems to suffice. This is my short list of places to get decent sushi and ramen in Rome.
Kohaku: This is a new restaurant in the Ludovisi neighborhood. It’s a warm elegant place and I am trying to try everything on the menu. So far, their soy sauce ramen (they have three types) is the best I’ve found here.
Hamesei: This is an old reliable place. Very quiet and and elegant. Down near the Spanish Steps and very busy.
Sushisen: This is also an old staple down by the pyramid so far away from the tourist area. Down in a basement and with a sushi conveyor belt.
Yusa Ramen: Way out to the south in the southern part of Rome.
Akira: There are several branches in Rome. This is a go-to place for ramen. I thought the meat was tough.
Mama-ya: This is a bit to the south in Rome but they seem to have a loyal following.
Hiromi: Although this is a pastry shop, they do sell savory items like ramen and curry.
There are other places that I have not tried yet, like Rokku, but as there are so many Japanese restaurants in Rome, I had to draw the line somewhere. I’m not obsessed.