Vanessa's place is great for family trips. It is very spacious and fully equipped to host a family. Vanessa was always very responsive to our needs and offered some great tips about Barcelona and how to get around the city.
Although not close to Plaza Catalunya and La Rambla, it has great transportation options to get you there. There is a bus stop right in front of the apartment and with that and the subway lines you can get to practically anywhere you wish to visit in the city.