Overall, we were happy with our stay. The location is great. It could not be closer to the metro, and there is a long stretch of restaurants just a few blocks away. The inside of the apartment is very nice. Furniture is clean and modern, beds are comfy, showers were nice. We had a really easy time getting around Barcelona from this location and were able to visit many different areas. We are really enjoyed the neighborhood and you can easily walked to La Sagrada Familia if that's part of your trip. However, there were a couple of things that kept me from giving the place a full five stars.
1) After checking in, we were told more about the "silence rules" which occur between 10PM and 9AM (11 hours of the day). We have stayed in a number of Airbnb's and it is completely normal to have quiet / sleeping hours. However, we were asked not to speak during these hours and if we needed to speak "to whisper". We weren't expecting to throw a party (this was
a family vacation), but we expect to be able to act normally where we stay. The rule is supposedly out of respect for neighbors in the building. However, they did not seem to follow the same standards from the noise we heard (which did not bother us). In the end, we were able to talk and interact normally during these hours, so it was not an issue but I don't think it's a fair expectation.
2) Each of us only had a single towel and pillow for the duration of the stay.
3) The listing mentioned complimentary wine in the refrigerator. There was not any upon check in, but thankfully it's very cheap at the market next door :)
All in all, we were happy with our stay and have no regrets.