We had a great stay at Ujale’s place.
The apartment is near the Naschmarkt and also the city center is in walkable distance. We always used the City Bikes parked at the opera house to get around Vienna.
The nights were pretty quiet and there are a couple of restaurants and bars just around the corner, but they closed early so we had a good sleep.
The apartment is as advertised, pretty huge and has a comfy couch and bed.