The penthouse is perfect! Unfortunately I only stayed one night but I wont stay anywhere else in Barcelona when I return. Although I arrived late, Albert had a very friendly gentleman who lived in the building meet me there to greet me and get me the keys to the flat. They provided me with plenty of useful information about the city, local sights, good east and even explained the public transportation system to me. If you want to see the La Sagrada familia cathedral this is definitely perfect location to do so. It is only a few shorts blocks away. There are also two grocery stores just steps away from the building which were super convenient even for my short stay. Lastly waking up to the fresh air on the balcony was rejuvenating to say the least!
I highly recommend this place :)