Martin or whoever is just a name. The property, as well as others in the same building are managed by a company (Check Vienna) and the communication as such is just template letters ( few lines) written in German and English, sent to your email at time intervals. You never deal with Martin. Around 14.00 you get an email with instructions how to enter and reminders of how it is your responsibility to leave before 10.00 on the day you leave.. They care more for you to know about the fines - €1000, €300, €150.00 etc, and this is reminded to you at regular intervals..
However, the building and the apartment were clean and tidy. Better than many I have been in the past. The WIFI was very slow, almost non existing or like like a dial up, which made my stay there difficult and unpleasant. The TV set did not work. It comes on the screen Kein Signal, and feel free to play with if you wish.. The sink in the bathroom was blocked. Biggest disappointment was the unbearable noise - day and night