I've been using Homelidays (Google it) to rent a flat/house/villas for short period of time. It is ideal if you are taking the whole family for a holiday. It's a shame that there's not much choices for Philippines but it has vast choices of accommodations in other part of the world.
I used the site when we went in Italy last year- we booked a 2 bed house in Imperia I paid 325 euro for a week stay it was a bargain!
You can really find bargain prices and value for your money
