The location was the reason we picked this place and it did not disappoint. Very close to city center and the st Stephan dom. Also conveniently close to Vienna explorer that have nice guided tours. (I do recommend the wachau wine tour)
The hotel was clean, had a nice breakfast (nothing to fancy - breads, hot drinks, juices, yoghurt, and cereal) for just €8. Staff only there in the morning but super friendly and helpful.
Room was large and decently clean with comfy beds. You could hear the other rooms pretty easily but it was quite from the street. Also the people staying seemed to respect the "quite hours" between 10pm - 8am.
I would recommend staying here if you'll mostly be out and about. Close to subway, tourist attractions and some good restaurants.
Hotel could to with some curtains or mats in the room to better the acoustics. The faucet in the bathroom was stiff and hard to control. Room could do with a deep clean but unless you're very sensitive cleanliness wasn't an issue.