Our stay in Silvia & Luis was really great. The location of this flat is really awesome - close to Sagrada Familia and also really close to another Metro station. Additionally there are supermarkets and Cafés right around the corner.
When we had little issues with loud neighbors and reached out to Silvia & Luis they immediately reacted really great and solved the solution even if it is of course not in their responsibilty. I would absolutely recommend this place.