Camille's place is in a great location. We had 2 small children, and it was lovely to be next door to a beautiful park as well as a lovely shopping centre + supermarket. It was all very convenient. There are trams, trains and buses nearby as well.
Because of the staircase, I would say the flat is not suitable for toddlers. It's nothing that the photos haven't revealed, we saw it, but were overly optimistic about our kids staying in their own beds. There is a large bed on the ground floor, which is where they stayed at the end, so it was sorted.
It is a nice flat, everything was clean and well kept. Camille was very helpful too!
I would recommend her flat, and would come back if visiting Barcelona again ( without kids)