I think this story offers a good example of how a reporter can use data viz to tell a story. AthensLive, based in Greece, reported on short term rentals in Athens and how that effects the housing market, especially for full time residents, driving costs higher and impacting the quality of life in the Greek capital, one of Europe's most populated urban areas in a country that is just now starting to recover after a decade of financial setbacks.
The data visualizations like the first graph give context by showing the recent staggering popularity of Airbnbs. I think I would have liked some more context though. For instance, based on their initial hypothesis, why are some areas more populated with Airbnbs than others (could their be another reason for it)? I also think the story could be expanded to include residents' personal stories about how the Airbnb market impacts their lives.
https://medium.com/athenslivegr/mapping-the-dominance-of-airbnb-in-athens-4cb9e0657e80