The location of the apartment is great, with a direct view on the Sagrada Familia. It's actually a group of apartments, managed as an hotel, with a lobby on the first floor (which is very helpful).
On the negative side, we didn't get the flat displayed on the snapshots on Airbnb. The pictures show a nicely designed flat, with a nice bathroom and kitchen. And our decision was partly based on this. The one we got was very far from this.
Despite the kindness of Iban and the great location, I can't help but think that we've been misled by pictures of another flat and got a lower class one, for the same price...