I read several forum posts about transfer options from the airport to the city. I'm leaning toward using the bus to Pl. Catalunya as my hotel is only about 3 blocks away; however, does anyone know how easy it is to use the bus if we have 2 suitcases each (which we are able to carry)? The Aerobus website says the buses have ample luggage space. Is this bus really more of a traveler transport rather than a typical city bus for commuters ? Thanks.