Good communication beforehand. Very friendly welcome from Ingrid and helpful tips about getting around Barcelona and places to go. Well informed.
The flat is in a superb location. We felt safe there. It is well presented, very clean and well-kept. It was well-stocked with cleaning products, tea towels, etc which helps. My husband and I stayed there with our daughter but I think it would be a bit of a crush for four adults.
The noise on the street at night didn't bother us although I think if you were a light sleeper you would struggle a little bit as there is a significant amount of noise from traffic outside. This is a consequence of being so central.
We had a great stay and the apartment met our needs, particularly as there was a lift which helped with the buggy. Thanks Ingrid for making it an enjoyable experience!