The Dinings restaurant in the Norman Hotel is a branch of the famous London restaurant going by the same name. It serves similar super quality Japanese food as the mother restaurant with a high-end price tag which will not make it affordable for the average person.
The Sushi is made with the best quality fish brought daily to the restaurant and with care for the details and aesthetics as custom in the Japanese kitchens. You might want to try the tasting menu, going with 2 routes, vegetarian tasting menu at $90 and fish tasting menu at about $110, not cheap at all.
The decor is simple with clear lines and you can seat on the beautiful balcony of the top floor of the Norman hotel and eat one of the best Japanese meals in Tel-aviv.