The location is OUTSTANDING!! So close to everything. The Albertina is a quick walk away, along with so many other things. It is definitely worth it for that alone. You have to coordinate to get the key which can be difficult, especially if you're driving in like we were. We ended up arriving quite a bit earlier than we had planned because we were worried about construction/accidents on the highway, but fortunately, Daniela was able to coordinate for us to get in earlier to drop off our bags, pick up the key, and then we returned after the apartment was cleaned. Digital entry would make things easier, but since the building isn't Airbnb friendly, that would be difficult.
The biggest issue is definitely the squeaky floors. After reading other reviews, we were totally paranoid the whole time that the neighbors would knock/complain. It's not a little squeaky, it's a LOT squeaky. You can't walk around edges to avoid squeaky spots, either. If you're with someone who is a light sleeper, you'll wake them up. The remodel of the apartment is nice, it just would have been better if the floors had been done, too. The only place you didn't have to worry about making noise is the kitchen and bathroom. Also, due to the higher temperatures recently, the apartment got very warm. There isn't AC, only a fan in the bedroom, so that was the only way to cool off.
All said and done, we would definitely stay here again. We had a great time in Vienna and look forward to returning.