This location is perfect for your stay in Vienna.
The location is at a 10 minutes walk from Mariahilfe Strasse and a 2 minutes walk from the subway and bus. Also it is in a very safe neighborhood. On our last night, there was some noise from the upstairs neighbors but apart from it was very quiet.
The apartment is sparkling clean and has great amenities: tons of towels, pillows and it is beautifully decorated (candles, fresh rose in the living room, beautiful paintings on the walls), the bedroom has his own reading spot with beautiful table books about Vienna.
In the kitchen we found everything we needed, plenty of coffee (different assortments) which lasted for the entire 7 days we were there. In the bathroom we also found soap, shampoo, body wash, ideal if you only travel with a carry-on bag, like we did.
Also it was warm enough to be comfortable in your pajamas.
Overall, we had a lovely time in this apartment and we recommend it to anyone that wants a place to stay in Vienna.