If you're craving good sushi but don't feel up for the fuss that comes with a long, sit-down dinner, Sushi VIBES can be a good option. It's a teeny-tiny counter service restaurant in a District 6 side street, within walking distance from Andrássy Avenue. The owner-chef lady hails from Fukuoka in southern Japan, and set up shop in Budapest in 2018, after stints in the Netherlands and Germany.
As elsewhere in Budapest, the sushi isn't cheap here - a salmon maki roll and two pieces of nigiri sushi run €9 - but still, less expensive than elsewhere. The weekday lunch special that includes two maki rolls and a miso soup for €5 is a great deal. Sushi VIBES imports both the nori (seaweed) and the rice from Japan. Besides sushi, you could also try tebasaki (€4), which are Japanese bone-in chicken wings coated in a sweet and savory sauce and fried twice for a crispy exterior. I reallly enjoyed them.