We didn't meet Cristina and her family in person, because they were gone for a few days, but everything was fine from the beginning and she stayed in contact with us the whole time.
The flat is very clean and modern and looks like in the pictures.
It is very close to Universitat, where the Aerobus from the airport stops, to Plaza Catalunya and the metro. You can do a lot of things by foot. The little supermarket next door is very convenient.