I just got back from a week long skate trip to BCN and it was amazing. Thanks to all the Pals that helped with some spot pins and advice.
If anybody is on the fence about going... GO FOR IT. It isn't cheap by any means, but all the famous spots are still more or less skateable and the locals are cool as hell. MACBA wasn't nearly as vibey as I expected (although the level of skating is insane so it can be intimidating), and the locals at Paral-lel were very welcoming to a visitor. The El Born plaza was amazing as well. Every city should build spots like that.
One of the best days I had was just hitting banks and spots in the La Pau and San Marti nieghborhoods, then skating down through Besos and then hitting all legendary spots in Forum. Seriously overwhelming. Maybe one of the most fun skating days of my life.
Great subway system, everyone speaks English if you are worried about communication issues, the food was mostly terrific, and there are some excellent and not very crowded things to do if it rains, like the Catalunyan National History Museum.
I am so glad I made the trip.