750 is very good from what I've been told. I have a few friends that have moved out there within the last three years (and so liaising with them alot) and I think your lucky to get this for a long term rental - go for it. Do look into the 2 year rental, I was advised to rent initially for 11 months - something to do with Spanish law.
Can you advise where to go for rentals?
Regards