Romina's apartment is right in the heart of Poblenou. You should stay here.
The apartment itself is spacious and stylish. The two bedrooms are generously sized. Both come with a desk & closet. The windows in the front bedroom are lovely: if you wake up in time the sunrise unfolds right in front of you.
There are great restaurants and bars nearby. If you're into urban planning, there's a superilla as well. The street itself is pretty quiet.
Check-in was a breeze, and we didn't have any issues during our stay.
Highly recommend.