Barcelona in late April hits that sweet spot before the summer crowds take over, making it the ideal time to wander the Gothic Quarter, sit outside at casual tapas bars, and take in the modernist architecture along the Eixample. Booking your flights and lodging in the winter gives you the best selection of places to stay near Passeig de Gracia without paying peak spring rates.
A typical trip runs about $2900 total, which is a lot to hand over in one lump sum during the colder months. Instead of wiping out your cash, you can spread those costs out over time using the right payment window.
That 18-month window is a hard deadline, not free money. If you still have a balance left when it ends, interest kicks in on the remaining amount from day one.