Mario and Dagmar's place was absolutely perfect from beginning to end. It's very close to the main train station in Vienna so it literally just takes a few minutes to get about everything you'd want to go in Vienna. It's also walking distance from Schloss Belvedere and the city centre.
Getting access to the flat was incredibly simple as they are using a key safe so you are not dependent on anyone to get in the flat which means no waiting or meeting people somewhere else to get keys - perfect.
The flat is brand new, super modern and very spacious for two people. You have absolutely everything you need there, and more - from toiletries (even bath salt!) to washing machine, TV, iron, dishwasher, etc. The flat was not only perfectly clean but also really nicely decorated which made it feel like home. All in all the best AirBnB experience I've had by far - highly recommend to anyone!