We spent two nights in this flat. The location is pretty good, you can access easily the center of Vienna with public transports or simply by foot !
Concerning Adam, I couldn't access the informations explaining how to enter the appartement and he replied to me in reasonable delais. Once I was in the apartment, the washing machine was full of water and some water went on the floor when I opened it : after I said that to Adam, I quickly had a response and someone went to the flat to clean and relaunch the washing machine.
We slept really well in our bedroom and the flat was really clean.
A negative point : some basics tools are missing in the apartement (no mop, no bath map, no towel to dry the dishes or paper towel,..)