Thanks you so much for all, everything was perfect.
Joan received us with a lot sympathy, from the beginning to the end of our travel, and proposed to reserve our taxis for our shuttles from the airport.
The appartment is localized in a neighborood close to all the most important monuments of Barcelona, and we have done most of them by feet with my 2 boys ( 9 and 6 years). All you need during your travel is inside, you only have to think about you want to do in Barcelona.
Romain