Translation:Wah! Wah! I don't know how free markets work! So instead of doing anything to address an obvious shortage in the supply of housing I'm going to bitch and moan until the government makes my safe space all comfy cozy again. Here's the short version for those of your who wasted your life on a liberal arts degree; there are people providing this service in Berlin because there is enough demand for high quality short term housing to support this business model. The solution is not to throw a temper tantrum over how the world works, but instead to invest in new housing developments until the supply has caught up with the demand. This is called economic growth and despite what your NIMBY mommy has told you it's actually a very good thing. If you want to see what whining about housing situations without a proactive solution in play will get you then just look over at California.