This is a wonderful place !
It's large - three bedrooms, plus a fold-out couch in the living room, plus a kitchen and laundry room, AND a nice terrace overlooking the park.
It's clean and quiet. The beds are comfortable, and there are lots of space heaters if you are visiting in the winter.
We partly choose it because we wanted to be close to the Sants train station for day trips. We made a day trip to Monserrat (an inexpensive bus leaves in the morning and returns in the late afternoon). We also made a trip day Girona and Figueres, easy, with multiple departures from the station. And finally, when we left for the airport there are trains every 30 minutes that are included by the 10 ticket subway card.
The neighbourhood has lots of good restaurants and bakeries, and is near the a decent sized super market. We also walked over to a large shopping center, built in a converted bull fighting ring.
We highly recommend a stay here.