Pros : The apartment is quiet. It is very near Volkstheater and museum quarter / thanks to a tram line you reach these places in just 1 stop ! It was also clean and well equipped !
Cons : to reach second floor, from the street you climb 52 steps to reach basement and then 24 to reach "mezzanine" and then you will climb up to the second floor. :-)
Stefan was kind and sent us a predefined mail with his list of 'to visit' places.