Great place to stay! The room is very private and really doesn't feel like you're staying in someone else's place (private entrance and bath-- cut off from rest of apt.) We found it walking distance to many great spots and not far from the metro. Barcelona is a city where all the tourist attractions are far from one another so you will definitely need to get acquainted with the public transportation unless you want to pay for taxis constantly.
The apartment felt super safe and the neighborhood was great. I recommend!
My only wish was that it had a small mini fridge.
All in all, a great stay and Begoña is super friendly and kind.