Delicious! I used leftover rib roast from New Year's dinner, so I did everything else first, then added the meat in at the end just to heat through. The only other change I made was I added a little bit of sour cream to get a bit more of that "tang" that I expect from stroganoff. But the whole family enjoyed it.
This was very easy and made a good quick dinner. In the future I think I'd substitute a wine or sherry instead of the vodka, as it had an alcohol taste to me. I'd also make a white sauce with the cream instead of adding the flour/water mixture, as I think flour needs time to cook in a fat source to improve flavor. We had leftovers, and we thought the dish improved significantly by the next day.