We stayed in the apartment on Huertas that is linked in Beckham's first post and HIGHLY recommend it. I don't know how they can afford to rent it out so cheaply. 50 euros per night with a three night minimum. We only needed a place for 2 nights, so paid for 3 and were still thrilled!

Rosa and Alberto, the owners are so friendly and helpful. The location is superb. We put our 2 kids on the sofa bed and avoided cramming 4 people into a hotel room. We will definitely be returning.