Village du Haut Val

Hi,
I've recently been looking into the French leaseback scheme, and in particular the Village du Haut Val development in Normandy. It's a fairly rural setting, with golf, horse-riding etc on site. On the face of it the rental (5.5%) and incentives (6% cashback, legals paid) offered seem incredibly attractive. However, having luckily stumbled upon this website/forum I can see that the statement 'guaranteed rental' needs to taken with a large bucketful of salt.
Does anyone have any experience/views on this development? The management company seem to be absolutely key to a successful leaseback and I can't find any info on the the one running Village du Haut Val, who are I think are called GESTION DE L'HOTEL DE BELLEME.

I read somewhere that if something seems too good to be true then it probably is. My interest is cooling rapidly, but I'd still very much appreciate any comments.

Sean