The flat is well located (close to Metro and Renfe) and there is enough space for 4 persons. You have sun on the balcony for almost the whole day. Supermarkets, Bakerys and other shops are super close. Communications to the owner was easy and without problems. The only problem was that some parts of the flat (under the beds and kitchen) were not so clean and there was no vacuum cleaner in the flat. We stayed 2 weeks and needed to clean. Some part of the kitchen equipment was also kind of dirty.
But at the end it´s a good place to stay and have a good time in Barcelona.