Some people used to say that touristic companies promoted this to lower prices and buy cheap to remodel whole neighborhoods.

Like Raval. Some German companies had bought whole buildings and know they rent their flats, or even worst, rooms in flats with locks. This is crazy.

I've been in such a place, in the heart of Raval, full of drug addicts, and filth enter to a place remodeled inside with small rooms who "expats" pay a lot, A LOT. It's crazy.