The appartment itself is great- it's beautiful and perfectly located, we enjoyed it a lot. Small supermarket just across the street, few min. walk to nearest metro station, less than 10 min. walk to Plaza Catalunia.
The only problem we had was with musquitos- the place was full of them, although we never opened a window during our stay. The host claimed it was a problem of the season and the area, which might be it.
At the bottom line, this appartment was not cheap at all, but we chose it as we were travelling with 2 little children, and this gave a perfect response to the need of enough space, comfort, and great location. Highly recommended.