Nice place to stay for a couple of months. Centrally located at the border of Sant Antoni and El Raval. It is a small, car-free street with one local restaurant, a music school and a jazz bar. The music from those places will not bother you at all.
The apartment itself is clean, though it could use some renovation. All the basics you need are there. The place is exactly how it shows on the advertisement.
J. Luis is a good, responsive host.