Elly's apartment is great: spacious, kitchen with all you need and a very inspiring toilet ;-)
Before we arrived Elly gave us good advice on how to travel and nice places to have lunch/dinner. We arrived late in the evening but Elly left the key in a nearby 24hours-open bakery (10min walk from Westbahnhof and 5min walk from the apartment) so that was absolutely fine. I would sure recommend this apartment to visitors of Vienna. Also when there is no eurovision songcontest to go to :-)