My wife and her parents stayed for four days and had a great experience. The apartment is walking distance to sagrada familia and tetuan metro is only minutes away to zip to any part of the city. The apartment is in a nice neighborhood, we never felt unsafe walking home late at night and its very close to a few restaurants that we walked to in the mornings for coffee. The building was pretty quiet for the most part, we didn't have any problems sleeping at night because of noise. Great place, would definitely stay again if we visit Barcelona again.