We had a wonderful visit in Vienna made super easy by the wonderful location of Cecelia's apartment. We were able to walk to almost 85% of the museums and performances and other sites we were interested in visiting. Since we enjoy preparing our own breakfasts and an occasional dinner, the fact that 2 Blla supermarkets are within 5-7 minutes walk, also made that part of our visit a pleasure.
Although we never actually met Cecelia, she was a very helpful email correspondent and her husband greeted us upon our arrival to explain how things worked in their very nice apartment. He was also kind enough to lend us an electric adapter. They also thoughtfully provided little packets of clothes washing soap and coins for the machine in the basement.
So, we strongly recommend Cecelia's apartment to visitors to Vienna.