no sorry August is long gone for me, look at www.holiday-rentals
at Denia area & you should find something. Anything left now should be highly negotiable so offer the owner (by phone, explain you are a responsible family used to taking rental properties) c 300 GBP pw for a beach apartment with shared pool, c 500 GBP pw for a villa with private pool. Ignore his posted prices as it would have let by now if it was priced correctly.
If the owner wonīt budge on price just move on - thereīs lots of competition. Fly on a sunday & return on a friday & the flight prices will be a lot lower. Hire car is easy - 100 GBP pw from Carjet.com.
Hope it helps, pm if you find your way over here & Iīll take you out on the boat for a day.