There's a nice piece about Gustav Mahler's composing hut (in fact his various composing huts) at the blog of The New Yorker's music Paul Ross. This is the one in Steinbach, above, with some lovely views of mountains and the lake, and also the one up in the Tyrol at Doblach. He wrote his second symphony and bits of the third at Steinbach and Das Lied von der Erde at Doblach. In the opening sequence of Ken Russell's film Mahler, one of Mahler's huts (the third, at Maiernigg) gets burnt to a crisp. Not the real one.