The good: a very nice (albeit small) studio apartment with a lovely terrace in beautiful Vila de Gracia. Several supermarkets nearby, a lovely view on mount Tibidabo and a bit of Sagrada Familia. Very comfortable bed and all amenities to make a few days' stay comfortable. In my opinion the terrace is bigger than the flat itself. Very fast internet.
The bad: I would have liked to know that the apartment opposite is undergoing a full-on construction so drills and hammers all day long. The locks on terrace doors do not work and the doors can easily be opened from outside. This might not be an issue but you never know, someone could get in via neighbouring terraces. There is a small safe box in the closet but a laptop won't fit in there. I didn't feel unsafe though.