Barcelona was a great city to visit. The people were friendly and polite, the costs were reasonable, and at least the area we were in was very pedestrian friendly. The city is clean (except for dog shit, people clean up after your dogs!) and the attractions are well worth seeing. I am used to being armed everywhere I go and never once did I feel the lack of a weapon with me while I was there.
The apartment we rented had a beautiful view and was ideally situated. There was a cab stand across from the door, a bus station at the next intersection, and a subway station 2 blocks away. We were surrounded by small bakeries, produce shops, coffee shops, etc. There was a large diagonal street that was primarily for pedestrians and was chocked full of restaurants, bars, and interesting little shops.
At the Picasso Museum the couple in front of us in the line for tickets were from the UK. She was from Liverpool, he was from Ireland (didn't say what city) and they had been living in Ireland for 15 years. The lady commented that even their bar crowds were well behaved. She said Ireland was a lovely place, but the drunken young men were often loud, obnoxious, and annoying but in Barcelona even the drunks were quiet and polite. I didn't see anyone I would really consider drunk, so I'll take her word for it, but even the drinkers were quite well behaved.
The crowds in the restaurants and on the streets were a mix of different ages that I find unusual. Usually in the US I see mostly young people here, older people there, and it's a rarity for the intermingling of college aged revelers and retirees to be drinking side by side or enjoying the same activities I found it very nice. I also liked the fact you could buy bread fresh every day right on your block, you could buy fresh seafood every day right on your block, etc. I liked how easy it was to get around without a car. The bus service confused the hell out of me, but the subway was easy to navigate. There are plenty of small parks and playgrounds, children are welcome everywhere, and they were all so welcoming and never made us feel like outsiders.
All in all, I think it was my favorite city I've ever been to. I'm a country mouse, but Barcelona is a very nice city.