Many of the city's attractions are within walking distance or reached through the bus/Metro network, so choose a centrally located hotel when you have the family in tow. The Catalonia Ramblas, just off Plaça de Catalunya, has rooms to accommodate families and a few perks for the parents like a spa and an outdoor pool with bar. Another option is the smaller H10 Catalunya Plaza.
Who needs Walt Disney when you have Antoni Gaudí and his whimsical architecture? Start off your morning with a visit to Casa Batlló, a short walk by way of the Ramba Catalunya. The arched roof that resembles a dragon charms children of all ages. A project is underway to create a Lego version of the building.
Grab a quick and healthy lunch at a nearby branch of Pans & Company.
Window-shop down Passeig de Gràcia back towards Plaça de Catalunya or take the metro one stop from Paseo de Gracia to the Plaça where you can refresh at the hotel before setting out for the rest of the day.