Barcelona is truly a colorful city, and it is not just because of Gaudi's architecture, but it's also the people and culture that encompasses this amazing city. The city is equipped with modern facilities and has a great public transportation system. Though it is not the largest city in Spain, (only the second) it is a huge city with many districts to explore. The old gothic district is probably where tourists hit most, but it is worth exploring the districts outside the old city to get a feel and culture of the city. However, I can't comment on how liveable the city would be because of my short visit, but as far as I can see, the city seems easy to get around, and there are activities, leisure centers and parks built for the residents of Barcelona.