PLUS
The location is very good: really in the hearth of Barcelona. The owners are very flexible for the check out and available to share information and suggestions. The flat was clean, confortable and very well equipped.
MINUS
The bathrooms were not at the top: one very small, the other in the main room and both without proper doors and the hot water was not enough for 4 showers.
In any case I would not doubt to book it again.