On the site of this building stood the house where Beethoven died in 1827. Beethoven had many residences in Vienna. Otto Weininger, a very odd philosopher admired by Karl Kraus, Ludwig Wittgenstein, James Joyce, etc. -- took his own life in this apartment building in 1903.
Weininger hung out with some of the writers from Cafe Griensteidl, but his basic ideas seem largely unconnected to his Viennese contemporaries. His ideas have precursors in Kant and Schelling.