Max was an excellent host, his apartment is absolutely beautiful, the photos don't do it justice! It's very well designed and spotlessly clean.
Max was very friendly and welcoming, and sent messages on the day we were due to arrive to make sure we knew where we were going.
The flat is conveniently located about a 15 minute walk from the Museum Quarter, and a two minute walk from a u-bahn stop. There are some nice bars and cafes around, plus Max provided a list of recommended restaurants and breakfast spots. We tried out three, all were great food so I encourage you to give them a go.
When I come back to Vienna, I'll be booking with Max again!