Interesting place to stay between Valencia and Malaga in Spain

We are planning a trip to Spain, and need to drive from Valencia to Malaga. With two kids we're looking to find an interesting place to stop for a day or two on the way, so the drive won't be as long. Could be either on the coast or inland, in the eastern part of Andalusia region or in the Murcia region. Does anyone know of a place they can recommend in this area?