Longterm rentals in Fuerteventura

Hi, I'm new to this forum and welcome any advice you can give.

I will be looking to move to Fuerteventura in the next couple of years - renting a property. 

What letting agents / online websites are the best and most legit for finding a longterm rental please? 

I'm aware of Goldacre Estates who rarely do rentals and also Bliss Properties who seem to only offer seasonal rentals.

Any websites, companies you can suggest I would really appreciate it. 

Thanks.