Here's another site option http://www.tucasa.com/alquiler/pisos-y-apartamentos/cadiz/?r=&idz=0011
As I mentioned before estate agents aren't great here on email or online booking. Their websites can be grossly out of date both in terms of what they say is available and what it costs. Our rental house is posted for sale at 750k...the owner offered it to us for 450k in December. He says he knows the estate agent prices are overstated but he says Spanish people like to feel theyre getting a bargain and expect to negotiate hard. I'd say more than 50% of all houses for sale and rental here are via private deals not agents. As the rental market is so depressed monthly rentals are fine - my friend is renting her 250euro 3 bedroom house on a monthly basis as she's in the process of buying another property. We rented an appt for 2.5 months before finding the house we're in now. Going via the owners directly, via their signs on the buuldings will yield you a better rental price and flexibility...more hassle as you need to arrive, walk around and spend a night or two in a hotel but worth it.
