Books like Klingsor's Last Summer
Hermann Hesse
Klingsor's Last Summer is 160 pages, about 2 hours 56 minutes at 250 words a minute.
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The Metamorphosis and Other Stories 4.8 h 
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Death in Venice 7.4 h 
Death in Venice and Other Stories 5.3 h 
The Metamorphosis, In the Penal Colony, and Other Stories 5.8 h 
My Century 6.1 h 
Tonio Kröger 2.2 h Bar height shows length. Estimated at 250 words a minute.