Short answers, pulled from the story.
Mozarthaus Vienna, also known as the Figaro House, is Mozart's only surviving Viennese residence, located at Domgasse 5 in Vienna's Old Town near St. Stephen's Cathedral. It has operated as a museum since the early 20th century and was fully renovated in time for Mozart Year 2006.
Mozart lived at what is now Mozarthaus Vienna from 1784 to 1787. During those years he composed The Marriage of Figaro and three of the six quartets he dedicated to Joseph Haydn.
While living at Domgasse 5, Mozart composed the opera The Marriage of Figaro and three of his six Haydn Quartets. He is also thought to have composed the Andante in F for a Small Mechanical Organ, K. 616, for a flute clock similar to one now on display in the apartment.
After its 2004-2006 renovation, the museum attracted about 203,000 visitors in 2006 alone. By 2019, annual attendance stood at around 215,000. Before the renovation, visitor numbers were roughly 80,000 per year.
In 1941, to mark the 150th anniversary of Mozart's death, the Nazi administration opened the former rooms to the public as part of "Imperial German Mozart Week," presenting Mozart as a "typically German" composer. In 1945 the Vienna Museum took over running the exhibition.
The museum spans multiple floors, including a third-floor multimedia exhibition on Mozart's social world in Vienna, a second-floor display covering his operas and collaborations with librettist Lorenzo da Ponte, and the first-floor apartment itself with four rooms, two cabinets, and a kitchen. The basement, co-financed by the European Union, houses a concert hall built into a preserved baroque vault.