Duncan and Theresa Murray from Bedfordshire fell in love with the Mijas area of Spain's Costa del Sol ten years ago when Duncan's father had a holiday home there. Now, they're determined to follow in his footsteps and buy one for themselves. They're looking for a place that they can also let out to holidaymakers when they're not using it, and Jonnie Irwin shows them five stunning properties for their £120,000 budget.