Back in the 70's I lived for a number of years in Vienna for business reasons. It's my second "heimat". The first year I was there I lived on upper Sieveringerstrasse at the start of the vineyards. I used to have dinner regularly at Eckel. It is an excellent family owned restaurant with a wonderful garden dining area in season. It's well worth a visit as it has great food, wine and service. One word of caution though. It is not a restaurant frequented by tourists - So knowledge of German is beneficial. If you want a first class true Viennese dining experience skip Grinzing and go to Eckel!