Eva and Michi’s apartment on Operngasse is fantastic. It’s clean and quiet and very spacious. The photos are very accurate - if anything the apartment is even bigger than it appears in the photos. The area is fantastic - the Naschmarkt is literally around the corner. It’s a short and easy stroll either into the first district (inner city) or to Mariahilferstraße, one of the main shopping areas.
Karlsplatz Ubahn station is only a few minutes walk away, and from there you can travel to anywhere in Vienna quickly, easily and cheaply on the Ubahn network.
The area around the apartment is very safe, and there are lots of places to grab a bite to eat nearby.
Eva and Michi were flexible with my check in time - my flight arrived mid morning and they let me check in earlier than 1400, which I really appreciated.
Another handy thing was the portable WiFi, which meant I could take it with me when I went out of the house. This really was a godsend and saved me a fortune in data roaming and having to constantly look for internet areas to log onto WiFi.
I would definitely recommend this apartment as a great place to stay in Vienna.