- Year 1877.
- Year 1878.
- Year 1879.
- Period: until 18-12-1879.
- Address: Margarethenstrasse No. 7. 2nd stairs, 4th floor, door 40.
- District number: V.
- District name: Margareten.
- Map Districts of Vienna.
Gustav Mahler and Hugo Wolf (1860-1903) befriend, both members of the Wagner Society, and share the same furnished room at the Margarethenstrasse No. 7.