My partner and I stayed for a full week. The location is perfect to walk around and explore. It is also very close to several trains in case you wanted to explore a little further out. The apartment itself was truly better than we imagined. The pictures are very accurate. The deck is private and peaceful. We did a little cooking in the kitchen, there is plenty of space for this and a good variety of tools. Finally, our host was SO helpful and friendly.
The whole experience was wonderful. Highly recommend this place if you're looking for a comfortable, peaceful home base while in Barcelona.