We had a fantastic stay in Sergio's apartment. The internet is good and it's a pleasant and quiet location with shops, bazars, pharmacy very close. Metro is about a 10 minute walk going down. Coming up to the flat from the metro is quite hilly. Near this location there is a small nook where you can climb some stairs and see the Sagrada Familia in the distance. Everything looked as expected. Just a note that there is no separate desk and we used the dining room to work. It might be quite uncomfortable for more than one person to work together if they have meetings. The bedroom is not very isolating.