The Imperium Residence is even nicer than the pictures show. The rooms are beautiful, comfortable and spotless. The location is perfect - easy walking distance to the most important attractions, as well as public transport. The staff is very communicative and willing to help with any issues, including our many travel challenges getting in to Vienna. There are (the equivalent to two flights of American) stairs to get to the elevator. The biggest drawback is that the Square directly in front of the building is undergoing MAJOR construction and it VERY noisy from 7am - 5pm on weekdays. That being said, we would still not hesitate to book again!