Perhaps no city has been affected by overtourism more than Barcelona. Between the tour groups of clueless Americans, gap year backpackers, and poorly-chaperoned packs of students, it’s impossible to escape the hoards of tourists in Barcelona. I, of course, am part of the problem. When I visited Barcelona, I was one more foreigner with a camera gawking at the Gaudi architecture. That is, until I stepped inside of Dalston Coffee….