The appartment is located few steps away from Hauptbahnhof, with quick connections to all the interest points in Vienna. The appartment is spacious, neat and very cosy, with a remarcably clean bathroom.
Maxi is a very friendly host, prompt answering to all my questions-requests(his recommendation about the park&ride close to the appartment was very useful).
Everything was great in Vienna, starting from check-in to check-out, first of all because of the place we stayed in.
Thanks for everything, Max!