Fantastic location in the center of the city, only a few blocks from St. Stephan's cathedral. One flight of stairs up, with a classic elevator if needed. Easy walking distance to most of the city, and short walk to the tram and Ubahn.
The apartment was newly renovated, clearly a full-time rental property, but well suited for guests. Nice kitchen and bathrooms, really great beds and bedding, good quality linens, two nice bedrooms, reasonably spacious for a flat of this type in the city center.
Managed by a company, but they were very easy to deal with, communicated clearly. Our train's arrival was delayed several hours, but no problems accessing the apartment remotely, and the manager was quite gracious.
Only two concerns to note. Perhaps to be expected with a full-time rental property, and maybe because it was brand new, there were no basic toiletry items, not even bath soap. We thought to bring shampoo just in case, but I'm no longer accustomed to packing basic soap. Of greater concern was only a bare minimum of toilet paper---an essential commodity. I'll give them the benefit of the doubt and credit that to being a brand new place. In an unfamiliar city in a foreign country, it can be difficult to find something so simple yet so essential. Some facial tissues (Kleenex) would reduce the demand on toilet paper as well. Again, this will probably be addressed in the future.
We stayed for 3 nights, the last of which was a Friday evening. It wasn't a problem on the other nights, but on Friday evening there were loud voices from the street into the wee hours. The windows backed up on a relatively quiet street, but for some reason it was really rowdy that one night. Just something to be cognizant of, but some level of noise to be expected in a city center, and a trade-off for such a great location.
I'd strongly recommend this property, the furnishings and location were great, just be aware of the small issues above that might be a concern to some.