In 2012 during an Euro-trip I spent some days in Vienna (Austria's capital). During that trip I got a recommendation for a restaurant from a local citizen. I really liked the restaurant and memorized it's name for future usage.
Fast forward to December 2019, I have a couple of friends in Vienna and I suggested this same restaurant to them, but to my disappointment I can't find anything about it. Probably my memory is playing me a trick, but I have a few things about this restaurant that I know for sure. I know more or less it's name, the approximate location and a date when it was open.
QUESTION: Is a question specifying what I know about this restaurant and asking if someone knows how's it called, on-topic for Travel SE?