Hans's apartment is in such a great location. I'm a huge fan of Antoni Gaudí, the genius architect behind Sagrada Familia and so many other amazing works in Barcelona. The apartment is right across from Sagrada Familia on the first floor of the building which makes coming up the stairs a breeze (there is also an elevator). The only drawback is that the view is not as impressive as it could be on a higher floor--not a big deal though.
The apartment was very clean, spacious, and had AC, which was great since it was hot in Barcelona.
There's an Irish pub a few doors down and a few nice restaurants in the neighborhood. Barcelona is a big town so walking to the Gothic Quarter or Las Ramblas or the seaside is a bit tough but there is public transportation nearby and with the myTaxi app you can call for a taxi and pay through the app. (No uber unfortunately).
If you're very sensitive to noise or light the front room overlooking the street may be rough. Other than that I liked staying here. It was comfortable and cozy.