If enough people do this it will be the end of Airbnb. This is one of the patterns the state of NY is using against Airbnb while Airbnb is arguing that the service is intended for people occasionally renting out their primary residence. If the state is able to prove a significant number of people used this model Airbnb is done in NY and I fear other states will follow.
When I was visiting Berlin last winter, I stayed at Airbnb flats and it seemed like a lot of the owners were doing exactly this. In fact, to your point, the city was, IIRC, about to forbid vacation rentals in certain neighborhoods. Berlin is rapidly gentrifying, there's a R.E. bubble going on, poorer people are being pushed out of the city, and this kind of thing intensifies that trend. I've no idea if cities in the…
This is true in lots of fun cities, primarily because it's so hard to build new housing stock—which is a Bad Thing, as Matthew Yglesias describes in The Rent is Too Damn High. Britain is suffering from a variant of the "no building" problem too: http://www.buzzfeed.com/dlknowles/britains-dysfunctional-pro... : "Construction started on just 107,000 new homes in England last year. Excluding World War II, that’s the lowest figure since the 1920s."
The solution to "gentrification" and what not is "building new dwellings," which we know how to do very effectively (elevators and steel are century-old technologies). The problem is regulatory / political.