This place is great for a couple to stay for a short period of time. The position is optimal at 5 minutes from Sagrada Familia by foot. The hosts are very nice and even though we had some minor communication issues, they promptly resolved them.
The street is also very calm but keep in mind that all apartments are at the first floor, so there is a bit of a privacy issue.
Since the apartment is composed only by one room + the bathroom, I would not recommend it for larger groups, as it can become pretty crowded.
Also don't expect to cook big dishes, since the kitchen is small and the stoves don't heat fast enough.
Nevertheless we had a pleasant stay and we would recommend it for its location and its price-quality relation.